./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:50,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:50,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:50,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:50,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:50,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:50,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:50,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:50,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:50,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:50,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:50,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:50,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:50,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:50,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:50,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:50,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:50,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:50,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:50,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:50,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:50,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:50,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:50,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:50,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:50,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:50,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:50,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:50,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:50,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:50,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:50,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:50,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:50,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:50,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:50,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:50,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:50,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:50,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:50,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:50,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:50,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:38:50,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:50,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:50,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:50,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:50,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:50,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:50,599 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:50,599 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:38:50,599 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:50,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:50,601 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:38:50,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:38:50,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:50,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:38:50,602 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:38:50,602 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:38:50,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:38:50,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:38:50,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:50,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:38:50,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:38:50,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:38:50,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:38:50,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:50,605 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:38:50,605 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:38:50,607 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:38:50,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:50,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:50,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:38:50,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:50,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:50,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:50,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:50,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:50,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:50,610 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:38:50,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:38:50,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:50,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:50,611 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_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-12 22:38:50,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:50,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:50,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:50,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:50,904 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:50,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-12 22:38:50,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/29460192b/1aaaf766382a4218ad4aa39e04abf5bc/FLAGfd7276c09 [2021-11-12 22:38:51,537 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:51,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-12 22:38:51,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/29460192b/1aaaf766382a4218ad4aa39e04abf5bc/FLAGfd7276c09 [2021-11-12 22:38:51,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/29460192b/1aaaf766382a4218ad4aa39e04abf5bc [2021-11-12 22:38:51,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:51,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:51,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:51,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:51,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:51,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:51" (1/1) ... [2021-11-12 22:38:51,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a6040c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:51, skipping insertion in model container [2021-11-12 22:38:51,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:51" (1/1) ... [2021-11-12 22:38:51,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:51,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:52,246 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-12 22:38:52,256 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-12 22:38:52,261 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-12 22:38:52,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:52,285 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:38:52,349 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-12 22:38:52,350 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-12 22:38:52,352 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-12 22:38:52,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:52,385 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:38:52,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52 WrapperNode [2021-11-12 22:38:52,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:52,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:52,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:38:52,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:38:52,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:52,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:38:52,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:38:52,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:38:52,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:38:52,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:38:52,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:38:52,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:38:52,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (1/1) ... [2021-11-12 22:38:52,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:52,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:38:52,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:38:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:38:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:38:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:38:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:38:53,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:38:53,334 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-12 22:38:53,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:53 BoogieIcfgContainer [2021-11-12 22:38:53,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:38:53,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:38:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:38:53,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:38:53,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:38:51" (1/3) ... [2021-11-12 22:38:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5641f1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:53, skipping insertion in model container [2021-11-12 22:38:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:52" (2/3) ... [2021-11-12 22:38:53,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5641f1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:53, skipping insertion in model container [2021-11-12 22:38:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:53" (3/3) ... [2021-11-12 22:38:53,350 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-12 22:38:53,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:38:53,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-12 22:38:53,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:38:53,440 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:38:53,440 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-12 22:38:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-12 22:38:53,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:53,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-12 22:38:53,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash 7537, now seen corresponding path program 1 times [2021-11-12 22:38:53,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:53,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087220604] [2021-11-12 22:38:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:53,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:53,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:53,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087220604] [2021-11-12 22:38:53,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087220604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:53,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:53,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 22:38:53,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327883956] [2021-11-12 22:38:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:53,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:38:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:38:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:38:53,808 INFO L87 Difference]: Start difference. First operand has 105 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:54,068 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-11-12 22:38:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:38:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-12 22:38:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:54,088 INFO L225 Difference]: With dead ends: 105 [2021-11-12 22:38:54,088 INFO L226 Difference]: Without dead ends: 103 [2021-11-12 22:38:54,091 INFO L932 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 [2021-11-12 22:38:54,097 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 89 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.23ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 208.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:54,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 54 Invalid, 76 Unknown, 0 Unchecked, 8.23ms Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 208.28ms Time] [2021-11-12 22:38:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-12 22:38:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2021-11-12 22:38:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 99 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2021-11-12 22:38:54,166 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 2 [2021-11-12 22:38:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:54,167 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2021-11-12 22:38:54,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2021-11-12 22:38:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-12 22:38:54,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:54,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-12 22:38:54,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:38:54,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 7538, now seen corresponding path program 1 times [2021-11-12 22:38:54,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:54,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128574902] [2021-11-12 22:38:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:54,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:54,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:54,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128574902] [2021-11-12 22:38:54,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128574902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:54,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:54,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 22:38:54,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377756191] [2021-11-12 22:38:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:54,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:38:54,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:38:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:38:54,294 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:54,482 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2021-11-12 22:38:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:38:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-12 22:38:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:54,487 INFO L225 Difference]: With dead ends: 114 [2021-11-12 22:38:54,488 INFO L226 Difference]: Without dead ends: 114 [2021-11-12 22:38:54,491 INFO L932 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 [2021-11-12 22:38:54,494 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 84 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 60 Invalid, 80 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 145.42ms Time] [2021-11-12 22:38:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-12 22:38:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2021-11-12 22:38:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2021-11-12 22:38:54,527 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 2 [2021-11-12 22:38:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:54,527 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2021-11-12 22:38:54,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2021-11-12 22:38:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:38:54,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:54,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:38:54,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:38:54,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1623890998, now seen corresponding path program 1 times [2021-11-12 22:38:54,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:54,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901938569] [2021-11-12 22:38:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:54,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:54,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:54,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901938569] [2021-11-12 22:38:54,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901938569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:54,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:54,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:38:54,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642501446] [2021-11-12 22:38:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:38:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:38:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:38:54,660 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:54,851 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2021-11-12 22:38:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:54,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 22:38:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:54,854 INFO L225 Difference]: With dead ends: 106 [2021-11-12 22:38:54,855 INFO L226 Difference]: Without dead ends: 106 [2021-11-12 22:38:54,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:54,857 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.49ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:54,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 42 Invalid, 140 Unknown, 0 Unchecked, 7.49ms Time], IncrementalHoareTripleChecker [29 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 156.71ms Time] [2021-11-12 22:38:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-12 22:38:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2021-11-12 22:38:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.7796610169491525) internal successors, (105), 94 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2021-11-12 22:38:54,867 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 6 [2021-11-12 22:38:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:54,868 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2021-11-12 22:38:54,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2021-11-12 22:38:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:38:54,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:54,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:38:54,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:38:54,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1623890997, now seen corresponding path program 1 times [2021-11-12 22:38:54,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:54,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869365320] [2021-11-12 22:38:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:54,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:54,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:54,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869365320] [2021-11-12 22:38:54,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869365320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:54,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:54,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:38:54,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472799694] [2021-11-12 22:38:54,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:54,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:38:54,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:38:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:38:54,993 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:55,220 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-11-12 22:38:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:55,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 22:38:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:55,222 INFO L225 Difference]: With dead ends: 125 [2021-11-12 22:38:55,222 INFO L226 Difference]: Without dead ends: 125 [2021-11-12 22:38:55,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:55,224 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 118 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:55,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 65 Invalid, 155 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 200.60ms Time] [2021-11-12 22:38:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-12 22:38:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2021-11-12 22:38:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.681159420289855) internal successors, (116), 103 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2021-11-12 22:38:55,234 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 6 [2021-11-12 22:38:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:55,235 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2021-11-12 22:38:55,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2021-11-12 22:38:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:38:55,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:55,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:55,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:38:55,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1486138634, now seen corresponding path program 1 times [2021-11-12 22:38:55,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:55,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506856114] [2021-11-12 22:38:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:55,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:55,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:55,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506856114] [2021-11-12 22:38:55,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506856114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:55,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:55,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:38:55,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809977982] [2021-11-12 22:38:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:55,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:38:55,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:38:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:38:55,295 INFO L87 Difference]: Start difference. First operand 104 states and 116 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:55,427 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-11-12 22:38:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:55,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:38:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:55,429 INFO L225 Difference]: With dead ends: 114 [2021-11-12 22:38:55,429 INFO L226 Difference]: Without dead ends: 114 [2021-11-12 22:38:55,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:55,431 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:55,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 94 Invalid, 108 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 119.36ms Time] [2021-11-12 22:38:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-12 22:38:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-11-12 22:38:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-11-12 22:38:55,454 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 8 [2021-11-12 22:38:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:55,458 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-11-12 22:38:55,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-11-12 22:38:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:38:55,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:55,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:55,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:38:55,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1485929393, now seen corresponding path program 1 times [2021-11-12 22:38:55,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:55,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392305395] [2021-11-12 22:38:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:55,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:55,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:55,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392305395] [2021-11-12 22:38:55,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392305395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:55,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:55,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:38:55,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179598895] [2021-11-12 22:38:55,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:55,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:55,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:55,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:55,574 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:55,758 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-11-12 22:38:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:38:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:55,760 INFO L225 Difference]: With dead ends: 102 [2021-11-12 22:38:55,760 INFO L226 Difference]: Without dead ends: 102 [2021-11-12 22:38:55,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:55,766 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:55,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 133 Invalid, 177 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [9 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 154.80ms Time] [2021-11-12 22:38:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-12 22:38:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-11-12 22:38:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 100 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-11-12 22:38:55,786 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 8 [2021-11-12 22:38:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:55,787 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-11-12 22:38:55,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-11-12 22:38:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:38:55,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:55,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:55,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:38:55,789 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1485929392, now seen corresponding path program 1 times [2021-11-12 22:38:55,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:55,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082290547] [2021-11-12 22:38:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:55,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:55,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:55,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082290547] [2021-11-12 22:38:55,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082290547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:55,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:55,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:38:55,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562271260] [2021-11-12 22:38:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:55,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:55,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:55,916 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:56,097 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-11-12 22:38:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:38:56,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:38:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:56,099 INFO L225 Difference]: With dead ends: 101 [2021-11-12 22:38:56,100 INFO L226 Difference]: Without dead ends: 101 [2021-11-12 22:38:56,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:56,101 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 9 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:56,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 169 Invalid, 170 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 155.37ms Time] [2021-11-12 22:38:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-12 22:38:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-11-12 22:38:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-11-12 22:38:56,119 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 8 [2021-11-12 22:38:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:56,119 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-11-12 22:38:56,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-11-12 22:38:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:38:56,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:56,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:56,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:38:56,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1029173125, now seen corresponding path program 1 times [2021-11-12 22:38:56,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:56,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910134077] [2021-11-12 22:38:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:56,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:56,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:56,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910134077] [2021-11-12 22:38:56,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910134077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:56,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:56,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:38:56,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416712055] [2021-11-12 22:38:56,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:56,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:38:56,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:38:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:56,251 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:56,445 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-11-12 22:38:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:38:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:38:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:56,454 INFO L225 Difference]: With dead ends: 151 [2021-11-12 22:38:56,454 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 22:38:56,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:38:56,458 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 131 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:56,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 161 Invalid, 197 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 154.33ms Time] [2021-11-12 22:38:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 22:38:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 103. [2021-11-12 22:38:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.52) internal successors, (114), 102 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2021-11-12 22:38:56,464 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 11 [2021-11-12 22:38:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:56,465 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2021-11-12 22:38:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2021-11-12 22:38:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:38:56,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:56,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:38:56,467 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash -627904864, now seen corresponding path program 1 times [2021-11-12 22:38:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:56,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663667820] [2021-11-12 22:38:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:56,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:56,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:56,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663667820] [2021-11-12 22:38:56,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663667820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:56,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:56,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:38:56,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105029888] [2021-11-12 22:38:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:56,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:56,536 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:56,668 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-11-12 22:38:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:56,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:38:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:56,670 INFO L225 Difference]: With dead ends: 103 [2021-11-12 22:38:56,670 INFO L226 Difference]: Without dead ends: 103 [2021-11-12 22:38:56,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:56,675 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 32 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:56,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 129 Invalid, 163 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [9 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 113.05ms Time] [2021-11-12 22:38:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-12 22:38:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-11-12 22:38:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 101 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-11-12 22:38:56,688 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 13 [2021-11-12 22:38:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:56,689 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-11-12 22:38:56,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-11-12 22:38:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:38:56,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:56,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:56,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:38:56,690 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash -627904863, now seen corresponding path program 1 times [2021-11-12 22:38:56,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:56,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391209304] [2021-11-12 22:38:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:56,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:56,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:56,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391209304] [2021-11-12 22:38:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391209304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:56,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:56,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:38:56,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218368996] [2021-11-12 22:38:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:56,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:56,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:56,801 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:56,930 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-11-12 22:38:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:38:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:56,931 INFO L225 Difference]: With dead ends: 99 [2021-11-12 22:38:56,931 INFO L226 Difference]: Without dead ends: 99 [2021-11-12 22:38:56,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:56,932 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:56,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 166 Invalid, 157 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 121.91ms Time] [2021-11-12 22:38:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-12 22:38:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-11-12 22:38:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-11-12 22:38:56,936 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 13 [2021-11-12 22:38:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:56,937 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-11-12 22:38:56,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-11-12 22:38:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 22:38:56,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:56,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:56,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 22:38:56,938 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:56,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1418323025, now seen corresponding path program 1 times [2021-11-12 22:38:56,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:56,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652763275] [2021-11-12 22:38:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:56,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:57,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:57,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652763275] [2021-11-12 22:38:57,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652763275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:57,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:57,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:38:57,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467185379] [2021-11-12 22:38:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:57,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:57,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:57,029 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:57,143 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-11-12 22:38:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 22:38:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:57,145 INFO L225 Difference]: With dead ends: 95 [2021-11-12 22:38:57,145 INFO L226 Difference]: Without dead ends: 95 [2021-11-12 22:38:57,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:57,149 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 9 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:57,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 164 Invalid, 135 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 98.48ms Time] [2021-11-12 22:38:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-12 22:38:57,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-11-12 22:38:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.457142857142857) internal successors, (102), 92 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-11-12 22:38:57,155 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 16 [2021-11-12 22:38:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:57,160 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-11-12 22:38:57,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-11-12 22:38:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 22:38:57,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:57,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:57,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 22:38:57,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:38:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1018130780, now seen corresponding path program 1 times [2021-11-12 22:38:57,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:57,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593534105] [2021-11-12 22:38:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:57,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:38:57,182 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:38:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:38:57,237 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:38:57,237 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:38:57,238 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (53 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (52 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (51 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (50 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (49 of 55 remaining) [2021-11-12 22:38:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (48 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (47 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (46 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (45 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (44 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (43 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (42 of 55 remaining) [2021-11-12 22:38:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (41 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (40 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (39 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (38 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (37 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (36 of 55 remaining) [2021-11-12 22:38:57,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (35 of 55 remaining) [2021-11-12 22:38:57,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (34 of 55 remaining) [2021-11-12 22:38:57,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (33 of 55 remaining) [2021-11-12 22:38:57,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (32 of 55 remaining) [2021-11-12 22:38:57,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2021-11-12 22:38:57,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (30 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (29 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (27 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (26 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (25 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (24 of 55 remaining) [2021-11-12 22:38:57,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (23 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (22 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (21 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (20 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (19 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (18 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (17 of 55 remaining) [2021-11-12 22:38:57,245 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (16 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (15 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (14 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2021-11-12 22:38:57,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (10 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (9 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (5 of 55 remaining) [2021-11-12 22:38:57,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (4 of 55 remaining) [2021-11-12 22:38:57,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2021-11-12 22:38:57,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2021-11-12 22:38:57,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2021-11-12 22:38:57,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2021-11-12 22:38:57,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 22:38:57,253 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:57,256 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:38:57,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:38:57 BoogieIcfgContainer [2021-11-12 22:38:57,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:38:57,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:38:57,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:38:57,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:38:57,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:53" (3/4) ... [2021-11-12 22:38:57,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:38:57,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:38:57,310 INFO L158 Benchmark]: Toolchain (without parser) took 5495.34ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 93.9MB in the end (delta: -17.6MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-11-12 22:38:57,310 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:57,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.44ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.6MB in the end (delta: 413.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:38:57,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.41ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 73.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:38:57,311 INFO L158 Benchmark]: Boogie Preprocessor took 67.70ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:38:57,312 INFO L158 Benchmark]: RCFGBuilder took 797.67ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 50.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-12 22:38:57,312 INFO L158 Benchmark]: TraceAbstraction took 3964.05ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 49.8MB in the beginning and 93.9MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:57,313 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 130.0MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:57,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.44ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.6MB in the end (delta: 413.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.41ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 73.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.70ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 797.67ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 50.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3964.05ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 49.8MB in the beginning and 93.9MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 130.0MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 105 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 741 SdHoareTripleChecker+Valid, 1628.32ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 741 mSDsluCounter, 1237 SdHoareTripleChecker+Invalid, 1280.25ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 738 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1435 IncrementalHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 546 mSDtfsCounter, 1435 mSolverCounterSat, 42.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 120 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:38:57,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:59,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:59,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:00,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:00,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:00,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:00,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:00,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:00,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:00,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:00,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:00,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:00,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:00,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:00,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:00,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:00,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:00,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:00,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:00,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:00,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:00,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:00,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:00,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:00,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:00,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:00,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:00,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:00,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:00,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:00,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:00,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:00,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:00,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:00,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:00,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:00,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:00,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:00,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:00,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:00,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:00,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:39:00,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:00,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:00,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:00,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:00,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:00,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:00,169 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:00,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:00,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:00,170 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:00,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:39:00,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:39:00,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:00,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:00,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:39:00,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:00,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:00,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:00,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:39:00,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:39:00,175 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:39:00,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:00,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:00,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:00,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:00,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:00,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:00,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:00,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:00,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:00,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:00,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:00,178 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:00,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:00,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:00,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:00,179 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-12 22:39:00,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:00,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:00,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:00,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:00,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:00,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-12 22:39:00,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/cb9dfb662/ed70bd60cf9a4e99b1a837de44f32e3e/FLAGce2085bb4 [2021-11-12 22:39:01,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:01,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-12 22:39:01,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/cb9dfb662/ed70bd60cf9a4e99b1a837de44f32e3e/FLAGce2085bb4 [2021-11-12 22:39:01,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/data/cb9dfb662/ed70bd60cf9a4e99b1a837de44f32e3e [2021-11-12 22:39:01,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:01,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:01,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:01,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:01,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:01,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:01" (1/1) ... [2021-11-12 22:39:01,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cabb90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:01, skipping insertion in model container [2021-11-12 22:39:01,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:01" (1/1) ... [2021-11-12 22:39:01,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:01,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:02,078 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-12 22:39:02,082 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-12 22:39:02,087 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-12 22:39:02,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:02,129 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:02,182 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-12 22:39:02,183 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-12 22:39:02,185 WARN L228 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_5c88e02a-67d3-43f6-817a-83a81f941181/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-12 22:39:02,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:02,226 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:02,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02 WrapperNode [2021-11-12 22:39:02,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:02,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:02,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:02,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:02,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:02,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:02,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:02,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:02,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:02,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:02,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:02,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:02,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (1/1) ... [2021-11-12 22:39:02,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:02,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:02,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:02,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:03,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:03,241 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-12 22:39:03,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:03 BoogieIcfgContainer [2021-11-12 22:39:03,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:03,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:03,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:03,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:03,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:01" (1/3) ... [2021-11-12 22:39:03,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e5ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:03, skipping insertion in model container [2021-11-12 22:39:03,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:02" (2/3) ... [2021-11-12 22:39:03,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e5ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:03, skipping insertion in model container [2021-11-12 22:39:03,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:03" (3/3) ... [2021-11-12 22:39:03,253 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-12 22:39:03,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:03,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-12 22:39:03,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:03,317 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:39:03,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-12 22:39:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 63 states have (on average 2.1587301587301586) internal successors, (136), 118 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:39:03,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:03,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:39:03,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-12 22:39:03,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:03,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791462220] [2021-11-12 22:39:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:03,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:03,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:39:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:03,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:03,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:03,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:03,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:03,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:03,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791462220] [2021-11-12 22:39:03,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791462220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:03,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:03,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:39:03,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023215418] [2021-11-12 22:39:03,565 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:03,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:03,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:03,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:03,604 INFO L87 Difference]: Start difference. First operand has 119 states, 63 states have (on average 2.1587301587301586) internal successors, (136), 118 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:03,885 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-11-12 22:39:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:39:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:03,898 INFO L225 Difference]: With dead ends: 121 [2021-11-12 22:39:03,898 INFO L226 Difference]: Without dead ends: 117 [2021-11-12 22:39:03,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:03,904 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 244.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:03,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 71 Invalid, 77 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 244.58ms Time] [2021-11-12 22:39:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-12 22:39:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-11-12 22:39:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.875) internal successors, (120), 112 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2021-11-12 22:39:03,950 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 3 [2021-11-12 22:39:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:03,950 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2021-11-12 22:39:03,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2021-11-12 22:39:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:39:03,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:03,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:39:03,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:04,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:04,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:04,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:04,175 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-12 22:39:04,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:04,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243902240] [2021-11-12 22:39:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:04,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:04,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:04,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:04,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:39:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:04,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:04,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:04,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:04,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:04,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243902240] [2021-11-12 22:39:04,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243902240] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:04,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:04,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:39:04,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467722489] [2021-11-12 22:39:04,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:04,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:04,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:04,399 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:04,767 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-11-12 22:39:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:39:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:04,771 INFO L225 Difference]: With dead ends: 131 [2021-11-12 22:39:04,771 INFO L226 Difference]: Without dead ends: 131 [2021-11-12 22:39:04,771 INFO L932 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 [2021-11-12 22:39:04,773 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 206 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:04,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 74 Invalid, 88 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [12 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 347.00ms Time] [2021-11-12 22:39:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-12 22:39:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2021-11-12 22:39:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 117 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2021-11-12 22:39:04,787 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 3 [2021-11-12 22:39:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:04,788 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2021-11-12 22:39:04,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2021-11-12 22:39:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:39:04,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:04,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:04,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:04,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:05,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027173, now seen corresponding path program 1 times [2021-11-12 22:39:05,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:05,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31236414] [2021-11-12 22:39:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:05,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:05,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:05,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:05,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:39:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:05,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:39:05,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:05,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:05,151 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:39:05,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-12 22:39:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:05,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:05,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:05,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31236414] [2021-11-12 22:39:05,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31236414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:05,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:05,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:39:05,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017560732] [2021-11-12 22:39:05,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:05,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:05,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:05,248 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:05,696 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2021-11-12 22:39:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:39:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 22:39:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:05,698 INFO L225 Difference]: With dead ends: 125 [2021-11-12 22:39:05,699 INFO L226 Difference]: Without dead ends: 125 [2021-11-12 22:39:05,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 8 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:05,709 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 158 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 421.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:05,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 59 Invalid, 140 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 421.80ms Time] [2021-11-12 22:39:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-12 22:39:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2021-11-12 22:39:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.6216216216216217) internal successors, (120), 109 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-11-12 22:39:05,722 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 7 [2021-11-12 22:39:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:05,722 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-11-12 22:39:05,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-11-12 22:39:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:39:05,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:05,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:05,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:05,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:05,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027174, now seen corresponding path program 1 times [2021-11-12 22:39:05,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:05,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870249999] [2021-11-12 22:39:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:05,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:05,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:05,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:39:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:06,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:39:06,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:06,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:06,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:06,163 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 22:39:06,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-12 22:39:06,176 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:39:06,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-12 22:39:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:06,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:10,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:10,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870249999] [2021-11-12 22:39:10,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870249999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:10,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:10,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:39:10,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643614082] [2021-11-12 22:39:10,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:10,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:39:10,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:39:10,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-12 22:39:10,405 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:11,739 INFO L93 Difference]: Finished difference Result 196 states and 215 transitions. [2021-11-12 22:39:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:39:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 22:39:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:11,741 INFO L225 Difference]: With dead ends: 196 [2021-11-12 22:39:11,741 INFO L226 Difference]: Without dead ends: 196 [2021-11-12 22:39:11,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=41, Invalid=68, Unknown=1, NotChecked=0, Total=110 [2021-11-12 22:39:11,743 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 147 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1022.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1159.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:11,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 235 Invalid, 509 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [24 Valid, 272 Invalid, 0 Unknown, 213 Unchecked, 1159.19ms Time] [2021-11-12 22:39:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-12 22:39:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 121. [2021-11-12 22:39:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 120 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2021-11-12 22:39:11,770 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 7 [2021-11-12 22:39:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:11,771 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2021-11-12 22:39:11,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2021-11-12 22:39:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:39:11,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:11,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:11,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:11,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:11,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1837273936, now seen corresponding path program 1 times [2021-11-12 22:39:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:11,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718334237] [2021-11-12 22:39:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:11,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:11,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:12,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:39:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:12,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:12,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:12,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:12,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:12,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718334237] [2021-11-12 22:39:12,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718334237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:12,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:12,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:39:12,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294501730] [2021-11-12 22:39:12,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:12,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:12,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:12,150 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:12,570 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2021-11-12 22:39:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 22:39:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:12,572 INFO L225 Difference]: With dead ends: 146 [2021-11-12 22:39:12,572 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 22:39:12,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:12,573 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 124 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 344.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:12,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 123 Invalid, 107 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 396.06ms Time] [2021-11-12 22:39:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 22:39:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2021-11-12 22:39:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 118 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2021-11-12 22:39:12,583 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 9 [2021-11-12 22:39:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:12,584 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2021-11-12 22:39:12,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2021-11-12 22:39:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:39:12,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:12,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:12,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:12,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:12,807 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1837292711, now seen corresponding path program 1 times [2021-11-12 22:39:12,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:12,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947839499] [2021-11-12 22:39:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:12,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:12,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:12,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:12,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:39:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:12,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:39:12,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:12,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:13,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 22:39:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:13,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:13,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947839499] [2021-11-12 22:39:13,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947839499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:13,178 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:13,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:39:13,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805663556] [2021-11-12 22:39:13,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:13,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:39:13,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:39:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:39:13,180 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:13,983 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2021-11-12 22:39:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:39:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 22:39:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:13,985 INFO L225 Difference]: With dead ends: 146 [2021-11-12 22:39:13,985 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 22:39:13,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:39:13,986 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 367 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 655.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:13,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 132 Invalid, 190 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [39 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 655.50ms Time] [2021-11-12 22:39:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 22:39:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-11-12 22:39:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 86 states have (on average 1.5) internal successors, (129), 117 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-11-12 22:39:13,997 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 9 [2021-11-12 22:39:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:13,998 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-11-12 22:39:13,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-11-12 22:39:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:39:13,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:13,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:14,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:14,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:14,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-11-12 22:39:14,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:14,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264449029] [2021-11-12 22:39:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:14,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:14,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:14,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:39:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:14,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:39:14,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:14,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:14,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 22:39:14,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-12 22:39:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:14,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:14,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:14,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264449029] [2021-11-12 22:39:14,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264449029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:14,439 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:39:14,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623492761] [2021-11-12 22:39:14,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:14,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:39:14,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:39:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:14,441 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:15,161 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-11-12 22:39:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:39:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:39:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:15,163 INFO L225 Difference]: With dead ends: 119 [2021-11-12 22:39:15,163 INFO L226 Difference]: Without dead ends: 119 [2021-11-12 22:39:15,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:39:15,165 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 44 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 570.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:15,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 230 Invalid, 235 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [9 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 643.95ms Time] [2021-11-12 22:39:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-12 22:39:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-11-12 22:39:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 86 states have (on average 1.4883720930232558) internal successors, (128), 116 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-11-12 22:39:15,172 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 11 [2021-11-12 22:39:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:15,173 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-11-12 22:39:15,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-11-12 22:39:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:39:15,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:15,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:15,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:15,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:15,387 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-11-12 22:39:15,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:15,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728237090] [2021-11-12 22:39:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:15,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:15,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:15,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:39:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:15,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:39:15,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:15,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:15,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-12 22:39:15,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-12 22:39:15,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-12 22:39:15,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-12 22:39:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:15,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:15,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:15,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728237090] [2021-11-12 22:39:15,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728237090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:15,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:15,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-12 22:39:15,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701654224] [2021-11-12 22:39:15,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:15,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:39:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:39:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:39:15,977 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:17,930 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2021-11-12 22:39:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:39:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:39:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:17,932 INFO L225 Difference]: With dead ends: 133 [2021-11-12 22:39:17,933 INFO L226 Difference]: Without dead ends: 133 [2021-11-12 22:39:17,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:39:17,934 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1443.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1606.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:17,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 351 Invalid, 384 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [12 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1606.72ms Time] [2021-11-12 22:39:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-12 22:39:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2021-11-12 22:39:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-11-12 22:39:17,940 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 11 [2021-11-12 22:39:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:17,940 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-11-12 22:39:17,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-11-12 22:39:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:39:17,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:17,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:17,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:18,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:18,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash -831409633, now seen corresponding path program 1 times [2021-11-12 22:39:18,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:18,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302681047] [2021-11-12 22:39:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:18,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:18,160 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:18,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:39:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:18,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:39:18,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:18,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:39:18,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-12 22:39:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:18,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:18,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:18,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302681047] [2021-11-12 22:39:18,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302681047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:18,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:39:18,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587182202] [2021-11-12 22:39:18,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:18,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:39:18,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:39:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:18,378 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:18,845 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2021-11-12 22:39:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:39:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 22:39:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:18,846 INFO L225 Difference]: With dead ends: 166 [2021-11-12 22:39:18,847 INFO L226 Difference]: Without dead ends: 166 [2021-11-12 22:39:18,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:39:18,848 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 358.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:18,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 217 Invalid, 152 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 416.29ms Time] [2021-11-12 22:39:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-12 22:39:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 114. [2021-11-12 22:39:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2021-11-12 22:39:18,854 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 12 [2021-11-12 22:39:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:18,855 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2021-11-12 22:39:18,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2021-11-12 22:39:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:39:18,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:18,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:18,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:19,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:19,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1081092570, now seen corresponding path program 1 times [2021-11-12 22:39:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:19,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032986589] [2021-11-12 22:39:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:19,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:19,070 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:19,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:39:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:19,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:39:19,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:19,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:39:19,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-12 22:39:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:19,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:19,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:19,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032986589] [2021-11-12 22:39:19,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032986589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:19,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:19,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:39:19,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714612816] [2021-11-12 22:39:19,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:19,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:39:19,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:39:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:39:19,427 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:20,207 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2021-11-12 22:39:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:39:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:39:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:20,209 INFO L225 Difference]: With dead ends: 164 [2021-11-12 22:39:20,209 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 22:39:20,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:39:20,210 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 70 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 724.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 369 Invalid, 268 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [8 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 724.41ms Time] [2021-11-12 22:39:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 22:39:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 115. [2021-11-12 22:39:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-11-12 22:39:20,215 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 18 [2021-11-12 22:39:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:20,216 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-11-12 22:39:20,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-11-12 22:39:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:39:20,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:20,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:20,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:20,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:20,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-12 22:39:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1080781688, now seen corresponding path program 1 times [2021-11-12 22:39:20,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:20,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178142527] [2021-11-12 22:39:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:20,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:20,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:20,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:39:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:39:20,485 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:39:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:39:20,552 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:39:20,552 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:39:20,553 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2021-11-12 22:39:20,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (53 of 55 remaining) [2021-11-12 22:39:20,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (52 of 55 remaining) [2021-11-12 22:39:20,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (51 of 55 remaining) [2021-11-12 22:39:20,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (50 of 55 remaining) [2021-11-12 22:39:20,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (49 of 55 remaining) [2021-11-12 22:39:20,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (48 of 55 remaining) [2021-11-12 22:39:20,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (47 of 55 remaining) [2021-11-12 22:39:20,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (46 of 55 remaining) [2021-11-12 22:39:20,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (45 of 55 remaining) [2021-11-12 22:39:20,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (44 of 55 remaining) [2021-11-12 22:39:20,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (43 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (42 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (41 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (40 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (39 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (38 of 55 remaining) [2021-11-12 22:39:20,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (37 of 55 remaining) [2021-11-12 22:39:20,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (36 of 55 remaining) [2021-11-12 22:39:20,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (35 of 55 remaining) [2021-11-12 22:39:20,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (34 of 55 remaining) [2021-11-12 22:39:20,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (33 of 55 remaining) [2021-11-12 22:39:20,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (32 of 55 remaining) [2021-11-12 22:39:20,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2021-11-12 22:39:20,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (30 of 55 remaining) [2021-11-12 22:39:20,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (29 of 55 remaining) [2021-11-12 22:39:20,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2021-11-12 22:39:20,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (27 of 55 remaining) [2021-11-12 22:39:20,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (26 of 55 remaining) [2021-11-12 22:39:20,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (25 of 55 remaining) [2021-11-12 22:39:20,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (24 of 55 remaining) [2021-11-12 22:39:20,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (23 of 55 remaining) [2021-11-12 22:39:20,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (22 of 55 remaining) [2021-11-12 22:39:20,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (21 of 55 remaining) [2021-11-12 22:39:20,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (20 of 55 remaining) [2021-11-12 22:39:20,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (19 of 55 remaining) [2021-11-12 22:39:20,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (18 of 55 remaining) [2021-11-12 22:39:20,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (17 of 55 remaining) [2021-11-12 22:39:20,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (16 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (15 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (14 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (10 of 55 remaining) [2021-11-12 22:39:20,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (9 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (5 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (4 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2021-11-12 22:39:20,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2021-11-12 22:39:20,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2021-11-12 22:39:20,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2021-11-12 22:39:20,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:20,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:20,779 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:20,782 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:39:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:39:20 BoogieIcfgContainer [2021-11-12 22:39:20,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:39:20,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:39:20,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:39:20,824 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:39:20,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:03" (3/4) ... [2021-11-12 22:39:20,828 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:39:20,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:39:20,829 INFO L158 Benchmark]: Toolchain (without parser) took 19228.73ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 43.3MB in the beginning and 81.7MB in the end (delta: -38.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:20,830 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:20,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.25ms. Allocated memory is still 79.7MB. Free memory was 43.2MB in the beginning and 56.1MB in the end (delta: -12.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-12 22:39:20,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.20ms. Allocated memory is still 79.7MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:39:20,834 INFO L158 Benchmark]: Boogie Preprocessor took 79.64ms. Allocated memory is still 79.7MB. Free memory was 54.0MB in the beginning and 52.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:39:20,836 INFO L158 Benchmark]: RCFGBuilder took 854.70ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 59.3MB in the end (delta: -7.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-12 22:39:20,836 INFO L158 Benchmark]: TraceAbstraction took 17578.25ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 58.9MB in the beginning and 82.5MB in the end (delta: -23.7MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-12 22:39:20,837 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 104.9MB. Free memory was 82.5MB in the beginning and 81.7MB in the end (delta: 826.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:20,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.25ms. Allocated memory is still 79.7MB. Free memory was 43.2MB in the beginning and 56.1MB in the end (delta: -12.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.20ms. Allocated memory is still 79.7MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.64ms. Allocated memory is still 79.7MB. Free memory was 54.0MB in the beginning and 52.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 854.70ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 59.3MB in the end (delta: -7.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 17578.25ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 58.9MB in the beginning and 82.5MB in the end (delta: -23.7MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 104.9MB. Free memory was 82.5MB in the beginning and 81.7MB in the end (delta: 826.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 17.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1342 SdHoareTripleChecker+Valid, 6615.49ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1342 mSDsluCounter, 1861 SdHoareTripleChecker+Invalid, 5767.96ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 213 IncrementalHoareTripleChecker+Unchecked, 1198 mSDsCounter, 149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1788 IncrementalHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 149 mSolverCounterUnsat, 663 mSDtfsCounter, 1788 mSolverCounterSat, 38.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 107 SyntacticMatches, 13 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 66, 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, 10 MinimizatonAttempts, 284 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 160 ConstructedInterpolants, 5 QuantifiedInterpolants, 1107 SizeOfPredicates, 31 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:39:20,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c88e02a-67d3-43f6-817a-83a81f941181/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample