./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE --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 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE --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 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:14:35,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:14:35,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:14:35,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:14:35,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:14:35,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:14:35,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:14:35,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:14:35,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:14:35,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:14:35,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:14:35,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:14:35,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:14:35,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:14:35,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:14:35,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:14:35,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:14:35,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:14:35,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:14:35,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:14:35,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:14:35,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:14:35,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:14:35,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:14:35,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:14:35,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:14:35,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:14:35,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:14:35,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:14:35,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:14:35,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:14:35,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:14:35,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:14:35,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:14:35,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:14:35,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:14:35,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:14:35,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:14:35,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:14:35,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:14:35,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:14:35,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:14:35,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:14:35,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:14:35,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:14:35,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:14:35,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:14:35,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:14:35,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:14:35,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:14:35,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:14:35,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:14:35,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:14:35,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:14:35,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:14:35,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:14:35,442 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:14:35,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:14:35,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:14:35,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:14:35,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:14:35,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:14:35,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:14:35,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:14:35,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:14:35,445 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:14:35,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:14:35,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:14:35,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:14:35,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:14:35,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:14:35,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:14:35,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:14:35,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:14:35,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:14:35,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:14:35,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:14:35,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:14:35,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:14:35,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:14:35,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:14:35,451 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-24 10:14:35,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:14:35,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:14:35,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:14:35,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:14:35,791 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:14:35,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-24 10:14:35,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/34cc87ad2/eb741aa41a764ba1befd4b3be19a2232/FLAG9f1988e9e [2021-10-24 10:14:36,493 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:14:36,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-24 10:14:36,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/34cc87ad2/eb741aa41a764ba1befd4b3be19a2232/FLAG9f1988e9e [2021-10-24 10:14:36,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/34cc87ad2/eb741aa41a764ba1befd4b3be19a2232 [2021-10-24 10:14:36,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:14:36,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:14:36,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:14:36,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:14:36,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:14:36,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:14:36" (1/1) ... [2021-10-24 10:14:36,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e85771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:36, skipping insertion in model container [2021-10-24 10:14:36,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:14:36" (1/1) ... [2021-10-24 10:14:36,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:14:36,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:14:37,209 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-24 10:14:37,213 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-24 10:14:37,216 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-24 10:14:37,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:14:37,234 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:14:37,282 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-24 10:14:37,284 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-24 10:14:37,286 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-24 10:14:37,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:14:37,326 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:14:37,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37 WrapperNode [2021-10-24 10:14:37,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:14:37,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:14:37,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:14:37,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:14:37,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:14:37,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:14:37,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:14:37,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:14:37,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:14:37,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:14:37,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:14:37,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:14:37,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (1/1) ... [2021-10-24 10:14:37,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:14:37,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:14:37,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:14:37,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:14:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:14:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:14:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:14:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:14:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:14:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 10:14:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:14:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:14:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:14:37,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:14:38,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:14:38,411 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-24 10:14:38,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:38 BoogieIcfgContainer [2021-10-24 10:14:38,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:14:38,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:14:38,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:14:38,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:14:38,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:14:36" (1/3) ... [2021-10-24 10:14:38,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61df0656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:38, skipping insertion in model container [2021-10-24 10:14:38,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:37" (2/3) ... [2021-10-24 10:14:38,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61df0656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:38, skipping insertion in model container [2021-10-24 10:14:38,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:38" (3/3) ... [2021-10-24 10:14:38,427 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-24 10:14:38,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:14:38,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-24 10:14:38,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:14:38,500 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 [2021-10-24 10:14:38,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-24 10:14:38,522 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) [2021-10-24 10:14:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:14:38,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:38,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:14:38,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 7537, now seen corresponding path program 1 times [2021-10-24 10:14:38,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:38,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867208888] [2021-10-24 10:14:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:38,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:38,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867208888] [2021-10-24 10:14:38,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867208888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:38,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:38,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:14:38,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936368077] [2021-10-24 10:14:38,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:14:38,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:14:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:38,817 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) [2021-10-24 10:14:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:38,968 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-10-24 10:14:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:14:38,970 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 [2021-10-24 10:14:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:38,981 INFO L225 Difference]: With dead ends: 105 [2021-10-24 10:14:38,982 INFO L226 Difference]: Without dead ends: 103 [2021-10-24 10:14:38,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-24 10:14:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2021-10-24 10:14:39,026 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) [2021-10-24 10:14:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2021-10-24 10:14:39,030 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 2 [2021-10-24 10:14:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:39,031 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2021-10-24 10:14:39,031 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) [2021-10-24 10:14:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2021-10-24 10:14:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:14:39,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:39,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:14:39,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:14:39,033 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash 7538, now seen corresponding path program 1 times [2021-10-24 10:14:39,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:39,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921776719] [2021-10-24 10:14:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:39,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:39,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:39,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921776719] [2021-10-24 10:14:39,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921776719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:39,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:39,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:14:39,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707836101] [2021-10-24 10:14:39,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:14:39,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:14:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:39,099 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) [2021-10-24 10:14:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:39,233 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2021-10-24 10:14:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:14:39,234 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 [2021-10-24 10:14:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:39,236 INFO L225 Difference]: With dead ends: 114 [2021-10-24 10:14:39,237 INFO L226 Difference]: Without dead ends: 114 [2021-10-24 10:14:39,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-24 10:14:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2021-10-24 10:14:39,247 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) [2021-10-24 10:14:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2021-10-24 10:14:39,250 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 2 [2021-10-24 10:14:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:39,251 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2021-10-24 10:14:39,251 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) [2021-10-24 10:14:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2021-10-24 10:14:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:14:39,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:39,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:14:39,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:14:39,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:39,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1623890998, now seen corresponding path program 1 times [2021-10-24 10:14:39,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:39,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225001634] [2021-10-24 10:14:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:39,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:39,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:39,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225001634] [2021-10-24 10:14:39,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225001634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:39,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:39,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:14:39,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968647274] [2021-10-24 10:14:39,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:39,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:39,344 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) [2021-10-24 10:14:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:39,566 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2021-10-24 10:14:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:39,566 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 [2021-10-24 10:14:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:39,572 INFO L225 Difference]: With dead ends: 106 [2021-10-24 10:14:39,573 INFO L226 Difference]: Without dead ends: 106 [2021-10-24 10:14:39,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-24 10:14:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2021-10-24 10:14:39,591 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) [2021-10-24 10:14:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2021-10-24 10:14:39,597 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 6 [2021-10-24 10:14:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:39,599 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2021-10-24 10:14:39,599 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) [2021-10-24 10:14:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2021-10-24 10:14:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:14:39,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:39,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:14:39,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:14:39,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:39,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1623890997, now seen corresponding path program 1 times [2021-10-24 10:14:39,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:39,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974576769] [2021-10-24 10:14:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:39,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:39,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:39,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974576769] [2021-10-24 10:14:39,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974576769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:39,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:39,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:14:39,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825043087] [2021-10-24 10:14:39,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:39,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:39,721 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) [2021-10-24 10:14:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:39,970 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-24 10:14:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:14:39,971 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 [2021-10-24 10:14:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:39,972 INFO L225 Difference]: With dead ends: 125 [2021-10-24 10:14:39,973 INFO L226 Difference]: Without dead ends: 125 [2021-10-24 10:14:39,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-24 10:14:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2021-10-24 10:14:39,987 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) [2021-10-24 10:14:39,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2021-10-24 10:14:39,989 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 6 [2021-10-24 10:14:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:39,989 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2021-10-24 10:14:39,990 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) [2021-10-24 10:14:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2021-10-24 10:14:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:14:39,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:39,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:39,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:14:39,991 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)] === [2021-10-24 10:14:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:39,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1486138634, now seen corresponding path program 1 times [2021-10-24 10:14:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:39,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024934633] [2021-10-24 10:14:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:39,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:40,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:40,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024934633] [2021-10-24 10:14:40,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024934633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:40,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:40,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:14:40,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476474110] [2021-10-24 10:14:40,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:40,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:40,115 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) [2021-10-24 10:14:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:40,269 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-10-24 10:14:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:14:40,270 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 [2021-10-24 10:14:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:40,271 INFO L225 Difference]: With dead ends: 114 [2021-10-24 10:14:40,271 INFO L226 Difference]: Without dead ends: 114 [2021-10-24 10:14:40,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-24 10:14:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-10-24 10:14:40,278 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) [2021-10-24 10:14:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-10-24 10:14:40,280 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 8 [2021-10-24 10:14:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:40,280 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-10-24 10:14:40,281 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) [2021-10-24 10:14:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-10-24 10:14:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:14:40,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:40,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:40,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:14:40,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1485929393, now seen corresponding path program 1 times [2021-10-24 10:14:40,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:40,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049937242] [2021-10-24 10:14:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:40,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:40,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:40,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049937242] [2021-10-24 10:14:40,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049937242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:40,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:40,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:14:40,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911054885] [2021-10-24 10:14:40,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:40,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:40,386 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) [2021-10-24 10:14:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:40,584 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-10-24 10:14:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:40,585 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 [2021-10-24 10:14:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:40,587 INFO L225 Difference]: With dead ends: 102 [2021-10-24 10:14:40,587 INFO L226 Difference]: Without dead ends: 102 [2021-10-24 10:14:40,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:14:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-24 10:14:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-10-24 10:14:40,593 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) [2021-10-24 10:14:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-10-24 10:14:40,595 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 8 [2021-10-24 10:14:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-10-24 10:14:40,596 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) [2021-10-24 10:14:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-10-24 10:14:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:14:40,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:40,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:40,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:14:40,598 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1485929392, now seen corresponding path program 1 times [2021-10-24 10:14:40,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:40,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617031421] [2021-10-24 10:14:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:40,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:40,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:40,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617031421] [2021-10-24 10:14:40,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617031421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:40,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:40,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:14:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944845000] [2021-10-24 10:14:40,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:40,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:40,730 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) [2021-10-24 10:14:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:40,917 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-10-24 10:14:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:14:40,917 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 [2021-10-24 10:14:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:40,918 INFO L225 Difference]: With dead ends: 101 [2021-10-24 10:14:40,919 INFO L226 Difference]: Without dead ends: 101 [2021-10-24 10:14:40,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:14:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-24 10:14:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-10-24 10:14:40,929 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) [2021-10-24 10:14:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-10-24 10:14:40,931 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 8 [2021-10-24 10:14:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:40,932 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-10-24 10:14:40,932 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) [2021-10-24 10:14:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-10-24 10:14:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:14:40,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:40,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:40,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:14:40,934 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)] === [2021-10-24 10:14:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1029173125, now seen corresponding path program 1 times [2021-10-24 10:14:40,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:40,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87370033] [2021-10-24 10:14:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:40,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:41,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:41,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87370033] [2021-10-24 10:14:41,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87370033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:41,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:41,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:14:41,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986219356] [2021-10-24 10:14:41,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:14:41,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:14:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:14:41,031 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) [2021-10-24 10:14:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:41,291 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-10-24 10:14:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:14:41,292 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 [2021-10-24 10:14:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:41,293 INFO L225 Difference]: With dead ends: 151 [2021-10-24 10:14:41,293 INFO L226 Difference]: Without dead ends: 151 [2021-10-24 10:14:41,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:14:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-24 10:14:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 103. [2021-10-24 10:14:41,297 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) [2021-10-24 10:14:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2021-10-24 10:14:41,298 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 11 [2021-10-24 10:14:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:41,299 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2021-10-24 10:14:41,299 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) [2021-10-24 10:14:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2021-10-24 10:14:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:14:41,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:41,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:41,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:14:41,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:41,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:41,301 INFO L82 PathProgramCache]: Analyzing trace with hash -627904864, now seen corresponding path program 1 times [2021-10-24 10:14:41,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:41,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115624083] [2021-10-24 10:14:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:41,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:41,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:41,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115624083] [2021-10-24 10:14:41,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115624083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:41,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:41,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:14:41,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779148120] [2021-10-24 10:14:41,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:41,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:41,358 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) [2021-10-24 10:14:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:41,545 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-24 10:14:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:41,546 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 [2021-10-24 10:14:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:41,547 INFO L225 Difference]: With dead ends: 103 [2021-10-24 10:14:41,547 INFO L226 Difference]: Without dead ends: 103 [2021-10-24 10:14:41,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:14:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-24 10:14:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-10-24 10:14:41,550 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) [2021-10-24 10:14:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-10-24 10:14:41,551 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 13 [2021-10-24 10:14:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:41,552 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-10-24 10:14:41,552 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) [2021-10-24 10:14:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-10-24 10:14:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:14:41,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:41,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:41,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:14:41,553 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash -627904863, now seen corresponding path program 1 times [2021-10-24 10:14:41,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:41,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998498430] [2021-10-24 10:14:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:41,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:41,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:41,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998498430] [2021-10-24 10:14:41,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998498430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:41,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:41,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:14:41,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215907313] [2021-10-24 10:14:41,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:41,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:41,636 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) [2021-10-24 10:14:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:41,790 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-10-24 10:14:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:41,791 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 [2021-10-24 10:14:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:41,792 INFO L225 Difference]: With dead ends: 99 [2021-10-24 10:14:41,792 INFO L226 Difference]: Without dead ends: 99 [2021-10-24 10:14:41,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-24 10:14:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-10-24 10:14:41,795 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) [2021-10-24 10:14:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-10-24 10:14:41,796 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 13 [2021-10-24 10:14:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:41,796 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-10-24 10:14:41,796 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) [2021-10-24 10:14:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-10-24 10:14:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:14:41,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:41,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:41,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 10:14:41,798 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1418323025, now seen corresponding path program 1 times [2021-10-24 10:14:41,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:41,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983692926] [2021-10-24 10:14:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:41,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:41,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:14:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983692926] [2021-10-24 10:14:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983692926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:41,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:41,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:14:41,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330688631] [2021-10-24 10:14:41,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:41,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:14:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:41,905 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) [2021-10-24 10:14:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:42,029 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-10-24 10:14:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:42,030 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 [2021-10-24 10:14:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:42,031 INFO L225 Difference]: With dead ends: 95 [2021-10-24 10:14:42,031 INFO L226 Difference]: Without dead ends: 95 [2021-10-24 10:14:42,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:14:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-24 10:14:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-10-24 10:14:42,034 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) [2021-10-24 10:14:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-10-24 10:14:42,035 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 16 [2021-10-24 10:14:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:42,035 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-10-24 10:14:42,035 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) [2021-10-24 10:14:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-10-24 10:14:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:14:42,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:42,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:42,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-24 10:14:42,037 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)] === [2021-10-24 10:14:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1018130780, now seen corresponding path program 1 times [2021-10-24 10:14:42,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:14:42,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197118785] [2021-10-24 10:14:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:42,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:14:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:14:42,055 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:14:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:14:42,091 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:14:42,092 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:14:42,093 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:14:42,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:14:42,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:14:42,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:14:42,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:14:42,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:14:42,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:14:42,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:14:42,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:14:42,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:14:42,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:14:42,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 10:14:42,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 10:14:42,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 10:14:42,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 10:14:42,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 10:14:42,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 10:14:42,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 10:14:42,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 10:14:42,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 10:14:42,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 10:14:42,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 10:14:42,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 10:14:42,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:14:42,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 10:14:42,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 10:14:42,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 10:14:42,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 10:14:42,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 10:14:42,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 10:14:42,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 10:14:42,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 10:14:42,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-24 10:14:42,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-24 10:14:42,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-24 10:14:42,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-24 10:14:42,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-24 10:14:42,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-24 10:14:42,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-24 10:14:42,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-24 10:14:42,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:14:42,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:14:42,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-24 10:14:42,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:14:42,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:14:42 BoogieIcfgContainer [2021-10-24 10:14:42,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:14:42,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:14:42,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:14:42,145 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:14:42,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:38" (3/4) ... [2021-10-24 10:14:42,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:14:42,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:14:42,151 INFO L168 Benchmark]: Toolchain (without parser) took 5386.61 ms. Allocated memory was 119.5 MB in the beginning and 148.9 MB in the end (delta: 29.4 MB). Free memory was 79.2 MB in the beginning and 79.5 MB in the end (delta: -262.9 kB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,151 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:14:42,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.97 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 88.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.11 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,153 INFO L168 Benchmark]: Boogie Preprocessor took 62.61 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 84.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,153 INFO L168 Benchmark]: RCFGBuilder took 962.17 ms. Allocated memory is still 119.5 MB. Free memory was 84.9 MB in the beginning and 61.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,154 INFO L168 Benchmark]: TraceAbstraction took 3726.70 ms. Allocated memory was 119.5 MB in the beginning and 148.9 MB in the end (delta: 29.4 MB). Free memory was 60.5 MB in the beginning and 79.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:42,154 INFO L168 Benchmark]: Witness Printer took 5.08 ms. Allocated memory is still 148.9 MB. Free memory is still 79.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:14:42,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 552.97 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 88.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.11 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.61 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 84.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 962.17 ms. Allocated memory is still 119.5 MB. Free memory was 84.9 MB in the beginning and 61.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3726.70 ms. Allocated memory was 119.5 MB in the beginning and 148.9 MB in the end (delta: 29.4 MB). Free memory was 60.5 MB in the beginning and 79.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.08 ms. Allocated memory is still 148.9 MB. Free memory is still 79.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list [L1038] COND FALSE !(!(((void*)0) != end)) [L1039] EXPR end->colour [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next [L1049] COND TRUE !(end->next) [L1049] reach_error() - 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: 3625.8ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 21.1ms, AutomataDifference: 2102.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 626 SDtfs, 741 SDslu, 738 SDs, 0 SdLazy, 1308 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1375.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 273.3ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 120.7ms AutomataMinimizationTime, 11 MinimizatonAttempts, 120 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.2ms SsaConstructionTime, 235.8ms SatisfiabilityAnalysisTime, 714.2ms 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 [2021-10-24 10:14:42,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:14:45,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:14:45,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:14:45,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:14:45,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:14:45,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:14:45,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:14:45,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:14:45,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:14:45,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:14:45,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:14:45,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:14:45,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:14:45,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:14:45,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:14:45,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:14:45,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:14:45,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:14:45,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:14:45,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:14:45,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:14:45,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:14:45,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:14:45,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:14:45,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:14:45,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:14:45,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:14:45,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:14:45,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:14:45,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:14:45,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:14:45,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:14:45,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:14:45,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:14:45,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:14:45,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:14:45,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:14:45,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:14:45,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:14:45,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:14:45,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:14:45,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:14:45,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:14:45,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:14:45,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:14:45,441 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:14:45,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:14:45,442 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:14:45,442 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:14:45,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:14:45,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:14:45,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:14:45,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:14:45,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:14:45,446 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:14:45,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:14:45,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:14:45,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:14:45,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:14:45,447 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:14:45,448 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:14:45,448 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:14:45,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:14:45,448 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:14:45,448 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:14:45,449 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:14:45,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:14:45,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:14:45,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:14:45,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:14:45,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:14:45,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:14:45,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:14:45,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:14:45,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:14:45,452 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:14:45,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:14:45,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:14:45,452 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-24 10:14:46,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:14:46,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:14:46,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:14:46,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:14:46,054 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:14:46,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-24 10:14:46,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/ebacd7b92/4e05f5e624724b0c84b483ace65fe8dc/FLAG1bc300d72 [2021-10-24 10:14:46,965 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:14:46,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-24 10:14:46,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/ebacd7b92/4e05f5e624724b0c84b483ace65fe8dc/FLAG1bc300d72 [2021-10-24 10:14:47,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/data/ebacd7b92/4e05f5e624724b0c84b483ace65fe8dc [2021-10-24 10:14:47,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:14:47,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:14:47,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:14:47,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:14:47,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:14:47,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97b9ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47, skipping insertion in model container [2021-10-24 10:14:47,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:14:47,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:14:47,754 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-24 10:14:47,761 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-24 10:14:47,764 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-24 10:14:47,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:14:47,788 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:14:47,835 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-24 10:14:47,837 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-24 10:14:47,839 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_48d90fce-99df-4ce7-a71a-d4c5c5712af9/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-24 10:14:47,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:14:47,901 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:14:47,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47 WrapperNode [2021-10-24 10:14:47,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:14:47,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:14:47,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:14:47,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:14:47,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:14:47,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:14:47,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:14:47,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:14:47,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:47,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:48,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:48,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:48,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:48,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:14:48,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:14:48,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:14:48,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:14:48,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (1/1) ... [2021-10-24 10:14:48,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:14:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:14:48,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:14:48,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:14:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:14:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:14:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:14:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:14:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 10:14:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:14:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:14:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:14:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:14:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:14:49,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:14:49,016 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-24 10:14:49,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:49 BoogieIcfgContainer [2021-10-24 10:14:49,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:14:49,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:14:49,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:14:49,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:14:49,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:14:47" (1/3) ... [2021-10-24 10:14:49,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1eeb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:49, skipping insertion in model container [2021-10-24 10:14:49,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:47" (2/3) ... [2021-10-24 10:14:49,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1eeb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:49, skipping insertion in model container [2021-10-24 10:14:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:49" (3/3) ... [2021-10-24 10:14:49,034 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-24 10:14:49,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:14:49,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-24 10:14:49,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:14:49,132 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 [2021-10-24 10:14:49,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-24 10:14:49,159 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) [2021-10-24 10:14:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:14:49,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:49,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:14:49,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-24 10:14:49,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:49,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623872934] [2021-10-24 10:14:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:49,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:49,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:49,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:49,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:14:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:49,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:14:49,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:49,408 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 [2021-10-24 10:14:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:49,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:49,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:49,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623872934] [2021-10-24 10:14:49,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623872934] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:49,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:49,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:14:49,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775655470] [2021-10-24 10:14:49,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:14:49,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:14:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:49,509 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) [2021-10-24 10:14:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:49,838 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-10-24 10:14:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:14:49,841 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 [2021-10-24 10:14:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:49,853 INFO L225 Difference]: With dead ends: 121 [2021-10-24 10:14:49,853 INFO L226 Difference]: Without dead ends: 117 [2021-10-24 10:14:49,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:14:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-24 10:14:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-10-24 10:14:49,900 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) [2021-10-24 10:14:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2021-10-24 10:14:49,904 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 3 [2021-10-24 10:14:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:49,905 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2021-10-24 10:14:49,905 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) [2021-10-24 10:14:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2021-10-24 10:14:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:14:49,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:49,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:14:49,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:14:50,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:50,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-24 10:14:50,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:50,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241693033] [2021-10-24 10:14:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:50,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:50,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:50,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:50,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:14:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:50,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:14:50,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:50,235 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 [2021-10-24 10:14:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:50,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:50,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:50,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241693033] [2021-10-24 10:14:50,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241693033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:50,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:50,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:14:50,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847947993] [2021-10-24 10:14:50,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:50,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:50,347 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) [2021-10-24 10:14:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:50,926 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-10-24 10:14:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:14:50,927 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 [2021-10-24 10:14:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:50,930 INFO L225 Difference]: With dead ends: 131 [2021-10-24 10:14:50,930 INFO L226 Difference]: Without dead ends: 131 [2021-10-24 10:14:50,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-24 10:14:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2021-10-24 10:14:50,943 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) [2021-10-24 10:14:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2021-10-24 10:14:50,945 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 3 [2021-10-24 10:14:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:50,946 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2021-10-24 10:14:50,946 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) [2021-10-24 10:14:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2021-10-24 10:14:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:14:50,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:50,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:50,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:51,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:51,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:51,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027173, now seen corresponding path program 1 times [2021-10-24 10:14:51,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:51,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030964281] [2021-10-24 10:14:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:51,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:51,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:51,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:14:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:14:51,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:51,286 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 [2021-10-24 10:14:51,397 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 10:14:51,398 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 16 treesize of output 21 [2021-10-24 10:14:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:51,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:51,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:51,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030964281] [2021-10-24 10:14:51,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030964281] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:51,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:51,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:14:51,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666234544] [2021-10-24 10:14:51,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:51,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:51,570 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) [2021-10-24 10:14:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:52,125 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2021-10-24 10:14:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:52,128 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 [2021-10-24 10:14:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:52,130 INFO L225 Difference]: With dead ends: 125 [2021-10-24 10:14:52,130 INFO L226 Difference]: Without dead ends: 125 [2021-10-24 10:14:52,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-24 10:14:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2021-10-24 10:14:52,150 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) [2021-10-24 10:14:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-10-24 10:14:52,152 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 7 [2021-10-24 10:14:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:52,153 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-10-24 10:14:52,153 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) [2021-10-24 10:14:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-10-24 10:14:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:14:52,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:52,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:52,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:52,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:52,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:14:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027174, now seen corresponding path program 1 times [2021-10-24 10:14:52,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:52,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634424117] [2021-10-24 10:14:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:52,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:52,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:52,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:52,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:14:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:52,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 10:14:52,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:52,507 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 [2021-10-24 10:14:52,519 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 [2021-10-24 10:14:52,709 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 10:14:52,709 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 28 treesize of output 30 [2021-10-24 10:14:52,727 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:14:52,728 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 27 treesize of output 27 [2021-10-24 10:14:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:52,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:57,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:57,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634424117] [2021-10-24 10:14:57,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634424117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:57,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:57,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 10:14:57,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631494231] [2021-10-24 10:14:57,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:14:57,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:14:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=36, Unknown=2, NotChecked=0, Total=56 [2021-10-24 10:14:57,906 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) [2021-10-24 10:15:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:18,381 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-10-24 10:15:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:15:18,383 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 [2021-10-24 10:15:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:18,385 INFO L225 Difference]: With dead ends: 157 [2021-10-24 10:15:18,385 INFO L226 Difference]: Without dead ends: 157 [2021-10-24 10:15:18,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 22184.6ms TimeCoverageRelationStatistics Valid=68, Invalid=111, Unknown=3, NotChecked=0, Total=182 [2021-10-24 10:15:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-24 10:15:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 107. [2021-10-24 10:15:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 106 states have internal predecessors, (117), 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) [2021-10-24 10:15:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-10-24 10:15:18,399 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 7 [2021-10-24 10:15:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:18,400 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-10-24 10:15:18,400 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) [2021-10-24 10:15:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-10-24 10:15:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:15:18,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:18,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:18,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:18,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:18,612 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)] === [2021-10-24 10:15:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:18,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1837273936, now seen corresponding path program 1 times [2021-10-24 10:15:18,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:18,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883285537] [2021-10-24 10:15:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:18,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:18,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:18,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:18,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:15:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:18,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:15:18,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:18,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:18,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:15:18,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883285537] [2021-10-24 10:15:18,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883285537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:18,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:18,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:15:18,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837625054] [2021-10-24 10:15:18,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:15:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:15:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:15:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:15:18,848 INFO L87 Difference]: Start difference. First operand 107 states and 117 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) [2021-10-24 10:15:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:19,374 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2021-10-24 10:15:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:15:19,374 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 [2021-10-24 10:15:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:19,376 INFO L225 Difference]: With dead ends: 128 [2021-10-24 10:15:19,376 INFO L226 Difference]: Without dead ends: 128 [2021-10-24 10:15:19,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-24 10:15:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2021-10-24 10:15:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 76 states have (on average 1.486842105263158) internal successors, (113), 104 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) [2021-10-24 10:15:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-10-24 10:15:19,412 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 9 [2021-10-24 10:15:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:19,412 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-10-24 10:15:19,413 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) [2021-10-24 10:15:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-10-24 10:15:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:15:19,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:19,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:19,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:19,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:19,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:15:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:19,637 INFO L82 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-10-24 10:15:19,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:19,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176476712] [2021-10-24 10:15:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:19,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:19,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:19,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:15:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:19,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:15:19,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:19,776 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 [2021-10-24 10:15:19,813 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 20 treesize of output 16 [2021-10-24 10:15:19,866 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 21 treesize of output 13 [2021-10-24 10:15:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:19,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:20,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:15:20,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176476712] [2021-10-24 10:15:20,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176476712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:20,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:20,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:15:20,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979062678] [2021-10-24 10:15:20,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:15:20,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:15:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:15:20,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:15:20,054 INFO L87 Difference]: Start difference. First operand 105 states and 113 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) [2021-10-24 10:15:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:20,787 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2021-10-24 10:15:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:15:20,787 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 [2021-10-24 10:15:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:20,789 INFO L225 Difference]: With dead ends: 108 [2021-10-24 10:15:20,789 INFO L226 Difference]: Without dead ends: 108 [2021-10-24 10:15:20,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:15:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-24 10:15:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2021-10-24 10:15:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 103 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) [2021-10-24 10:15:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-10-24 10:15:20,797 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 11 [2021-10-24 10:15:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:20,798 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-10-24 10:15:20,798 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) [2021-10-24 10:15:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-10-24 10:15:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:15:20,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:20,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:20,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:21,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:21,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:15:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:21,031 INFO L82 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-10-24 10:15:21,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:21,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448152802] [2021-10-24 10:15:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:21,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:21,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:21,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:15:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:21,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:15:21,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:21,177 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 [2021-10-24 10:15:21,234 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 17 treesize of output 13 [2021-10-24 10:15:21,247 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 [2021-10-24 10:15:21,326 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 [2021-10-24 10:15:21,332 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 [2021-10-24 10:15:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:21,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:21,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:15:21,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448152802] [2021-10-24 10:15:21,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448152802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:21,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:21,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 10:15:21,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385011275] [2021-10-24 10:15:21,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:15:21,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:15:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:15:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:15:21,862 INFO L87 Difference]: Start difference. First operand 104 states and 112 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) [2021-10-24 10:15:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:24,481 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2021-10-24 10:15:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:15:24,484 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 [2021-10-24 10:15:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:24,485 INFO L225 Difference]: With dead ends: 123 [2021-10-24 10:15:24,485 INFO L226 Difference]: Without dead ends: 123 [2021-10-24 10:15:24,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 759.3ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:15:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-24 10:15:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2021-10-24 10:15:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 100 states have internal predecessors, (109), 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) [2021-10-24 10:15:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-10-24 10:15:24,492 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 11 [2021-10-24 10:15:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:24,492 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-10-24 10:15:24,492 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) [2021-10-24 10:15:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-10-24 10:15:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:15:24,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:24,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:24,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:24,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:24,709 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)] === [2021-10-24 10:15:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -831409633, now seen corresponding path program 1 times [2021-10-24 10:15:24,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:24,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899406739] [2021-10-24 10:15:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:24,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:24,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:24,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:24,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:15:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:15:24,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:24,827 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 [2021-10-24 10:15:24,923 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 [2021-10-24 10:15:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:24,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:25,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:15:25,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899406739] [2021-10-24 10:15:25,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899406739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:25,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:25,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:15:25,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305756081] [2021-10-24 10:15:25,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:25,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:15:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:25,017 INFO L87 Difference]: Start difference. First operand 101 states and 109 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) [2021-10-24 10:15:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:25,628 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2021-10-24 10:15:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:25,629 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 [2021-10-24 10:15:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:25,631 INFO L225 Difference]: With dead ends: 162 [2021-10-24 10:15:25,631 INFO L226 Difference]: Without dead ends: 162 [2021-10-24 10:15:25,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-24 10:15:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 107. [2021-10-24 10:15:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 106 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) [2021-10-24 10:15:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2021-10-24 10:15:25,637 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 12 [2021-10-24 10:15:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:25,638 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2021-10-24 10:15:25,638 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) [2021-10-24 10:15:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2021-10-24 10:15:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:15:25,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:25,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:25,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:25,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:25,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:15:25,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:25,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1081092570, now seen corresponding path program 1 times [2021-10-24 10:15:25,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:25,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177812473] [2021-10-24 10:15:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:25,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:25,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:25,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:15:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:25,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:15:25,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:25,981 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 [2021-10-24 10:15:26,093 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 [2021-10-24 10:15:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:26,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:26,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:15:26,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177812473] [2021-10-24 10:15:26,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177812473] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:26,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:26,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 10:15:26,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448003032] [2021-10-24 10:15:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:15:26,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:15:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:15:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:15:26,288 INFO L87 Difference]: Start difference. First operand 107 states and 116 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) [2021-10-24 10:15:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:27,143 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2021-10-24 10:15:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:27,143 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 [2021-10-24 10:15:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:27,145 INFO L225 Difference]: With dead ends: 160 [2021-10-24 10:15:27,145 INFO L226 Difference]: Without dead ends: 160 [2021-10-24 10:15:27,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:15:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-24 10:15:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 111. [2021-10-24 10:15:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 110 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) [2021-10-24 10:15:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-10-24 10:15:27,151 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 18 [2021-10-24 10:15:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:27,152 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-10-24 10:15:27,152 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) [2021-10-24 10:15:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-10-24 10:15:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:15:27,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:27,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:27,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:27,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:27,369 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-10-24 10:15:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1080781688, now seen corresponding path program 1 times [2021-10-24 10:15:27,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:15:27,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31128217] [2021-10-24 10:15:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:27,371 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:15:27,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:15:27,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:15:27,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:15:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:15:27,501 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:15:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:15:27,597 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:15:27,597 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:15:27,598 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:15:27,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:15:27,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:15:27,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:15:27,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:15:27,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:15:27,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:15:27,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:15:27,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:15:27,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:15:27,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:15:27,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 10:15:27,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 10:15:27,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 10:15:27,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 10:15:27,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 10:15:27,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 10:15:27,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 10:15:27,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 10:15:27,605 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 10:15:27,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 10:15:27,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 10:15:27,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 10:15:27,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:15:27,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 10:15:27,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 10:15:27,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:15:27,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-24 10:15:27,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-24 10:15:27,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-24 10:15:27,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 10:15:27,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 10:15:27,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 10:15:27,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 10:15:27,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 10:15:27,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 10:15:27,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 10:15:27,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-24 10:15:27,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-24 10:15:27,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-24 10:15:27,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-24 10:15:27,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-24 10:15:27,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-24 10:15:27,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-24 10:15:27,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-24 10:15:27,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:15:27,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:15:27,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:27,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:15:27,834 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:15:27,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:15:27 BoogieIcfgContainer [2021-10-24 10:15:27,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:15:27,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:15:27,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:15:27,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:15:27,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:49" (3/4) ... [2021-10-24 10:15:27,876 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:15:27,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:15:27,880 INFO L168 Benchmark]: Toolchain (without parser) took 40673.62 ms. Allocated memory was 60.8 MB in the beginning and 102.8 MB in the end (delta: 41.9 MB). Free memory was 39.2 MB in the beginning and 75.1 MB in the end (delta: -36.0 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:27,880 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 41.9 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:27,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.88 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:27,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.10 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:27,883 INFO L168 Benchmark]: Boogie Preprocessor took 55.18 ms. Allocated memory is still 60.8 MB. Free memory was 34.7 MB in the beginning and 33.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:27,883 INFO L168 Benchmark]: RCFGBuilder took 989.00 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.8 MB in the beginning and 46.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:27,886 INFO L168 Benchmark]: TraceAbstraction took 38849.68 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 46.0 MB in the beginning and 75.1 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:27,887 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 102.8 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:27,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 41.9 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 696.88 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.10 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.18 ms. Allocated memory is still 60.8 MB. Free memory was 34.7 MB in the beginning and 33.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 989.00 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.8 MB in the beginning and 46.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38849.68 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 46.0 MB in the beginning and 75.1 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 102.8 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list [L1038] COND FALSE !(!(((void*)0) != end)) [L1039] EXPR end->colour [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next [L1049] COND TRUE !(end->next) [L1049] reach_error() - 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: 38714.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 41.9ms, AutomataDifference: 27370.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 570 SDtfs, 1092 SDslu, 1078 SDs, 0 SdLazy, 1712 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7947.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 23502.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 139.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 106.3ms SsaConstructionTime, 273.5ms SatisfiabilityAnalysisTime, 7722.7ms InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 144 ConstructedInterpolants, 5 QuantifiedInterpolants, 1010 SizeOfPredicates, 28 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 [2021-10-24 10:15:27,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d90fce-99df-4ce7-a71a-d4c5c5712af9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...