./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs --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 749ac904a4415c18bbecfeef551a8e5627795ea9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs --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 749ac904a4415c18bbecfeef551a8e5627795ea9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:31,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:31,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:31,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:31,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:31,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:31,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:31,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:31,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:31,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:31,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:31,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:31,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:31,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:31,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:31,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:31,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:31,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:31,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:31,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:31,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:31,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:31,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:31,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:31,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:31,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:31,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:31,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:31,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:31,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:31,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:31,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:31,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:31,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:31,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:31,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:31,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:31,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:31,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:31,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:31,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:31,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 01:54:31,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:31,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:31,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:31,541 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:31,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:31,541 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:31,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:54:31,541 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:31,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:31,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:54:31,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:54:31,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:31,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:54:31,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:54:31,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:54:31,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 01:54:31,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 01:54:31,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:31,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:31,545 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 01:54:31,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:31,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:31,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:31,545 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 01:54:31,546 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 01:54:31,546 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 01:54:31,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:31,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:31,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:31,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:31,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:31,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:31,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:31,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:31,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:31,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:54:31,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:54:31,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:31,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:31,549 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_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 749ac904a4415c18bbecfeef551a8e5627795ea9 [2021-10-16 01:54:31,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:31,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:31,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:31,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:31,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:31,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-16 01:54:31,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/500897388/fea8c84b02ff45bd88810fce0a551d17/FLAGfedca9411 [2021-10-16 01:54:32,456 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:32,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-16 01:54:32,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/500897388/fea8c84b02ff45bd88810fce0a551d17/FLAGfedca9411 [2021-10-16 01:54:32,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/500897388/fea8c84b02ff45bd88810fce0a551d17 [2021-10-16 01:54:32,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:32,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:32,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:32,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:32,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:32,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289c4210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32, skipping insertion in model container [2021-10-16 01:54:32,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:32,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:33,197 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_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-16 01:54:33,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,236 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:33,265 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_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-16 01:54:33,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,326 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:33,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33 WrapperNode [2021-10-16 01:54:33,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:33,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:33,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:33,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:33,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:33,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:33,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:33,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:33,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:33,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:33,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:54:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 01:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 01:54:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 01:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 01:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:54:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:34,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:34,886 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-16 01:54:34,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:34 BoogieIcfgContainer [2021-10-16 01:54:34,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:34,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:34,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:34,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:34,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:32" (1/3) ... [2021-10-16 01:54:34,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:34, skipping insertion in model container [2021-10-16 01:54:34,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (2/3) ... [2021-10-16 01:54:34,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:34, skipping insertion in model container [2021-10-16 01:54:34,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:34" (3/3) ... [2021-10-16 01:54:34,901 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2021-10-16 01:54:34,906 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:34,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 131 error locations. [2021-10-16 01:54:34,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:34,957 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, mConcurrency=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 [2021-10-16 01:54:34,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 131 error locations. [2021-10-16 01:54:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 123 states have (on average 2.5284552845528454) internal successors, (311), 254 states have internal predecessors, (311), 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) [2021-10-16 01:54:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 01:54:34,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:34,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 01:54:34,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:34,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash 19122463, now seen corresponding path program 1 times [2021-10-16 01:54:35,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:35,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683095343] [2021-10-16 01:54:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:35,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:35,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:35,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683095343] [2021-10-16 01:54:35,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683095343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:35,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:35,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:35,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567334815] [2021-10-16 01:54:35,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:35,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,186 INFO L87 Difference]: Start difference. First operand has 255 states, 123 states have (on average 2.5284552845528454) internal successors, (311), 254 states have internal predecessors, (311), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 01:54:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:35,572 INFO L93 Difference]: Finished difference Result 473 states and 496 transitions. [2021-10-16 01:54:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-16 01:54:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:35,600 INFO L225 Difference]: With dead ends: 473 [2021-10-16 01:54:35,600 INFO L226 Difference]: Without dead ends: 471 [2021-10-16 01:54:35,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-10-16 01:54:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 252. [2021-10-16 01:54:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 123 states have (on average 2.1463414634146343) internal successors, (264), 251 states have internal predecessors, (264), 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) [2021-10-16 01:54:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 264 transitions. [2021-10-16 01:54:35,673 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 264 transitions. Word has length 4 [2021-10-16 01:54:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:35,674 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 264 transitions. [2021-10-16 01:54:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 01:54:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 264 transitions. [2021-10-16 01:54:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 01:54:35,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:35,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 01:54:35,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:54:35,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash 19122464, now seen corresponding path program 1 times [2021-10-16 01:54:35,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:35,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382832338] [2021-10-16 01:54:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:35,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:35,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:35,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382832338] [2021-10-16 01:54:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382832338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:35,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:35,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:35,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451254970] [2021-10-16 01:54:35,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,762 INFO L87 Difference]: Start difference. First operand 252 states and 264 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 01:54:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,026 INFO L93 Difference]: Finished difference Result 397 states and 416 transitions. [2021-10-16 01:54:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-16 01:54:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,029 INFO L225 Difference]: With dead ends: 397 [2021-10-16 01:54:36,030 INFO L226 Difference]: Without dead ends: 397 [2021-10-16 01:54:36,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-16 01:54:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 250. [2021-10-16 01:54:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 123 states have (on average 2.130081300813008) internal successors, (262), 249 states have internal predecessors, (262), 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) [2021-10-16 01:54:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 262 transitions. [2021-10-16 01:54:36,055 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 262 transitions. Word has length 4 [2021-10-16 01:54:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,056 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 262 transitions. [2021-10-16 01:54:36,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 01:54:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 262 transitions. [2021-10-16 01:54:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:54:36,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:54:36,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:54:36,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 592197104, now seen corresponding path program 1 times [2021-10-16 01:54:36,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353992464] [2021-10-16 01:54:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:36,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353992464] [2021-10-16 01:54:36,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353992464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 01:54:36,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316246915] [2021-10-16 01:54:36,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,105 INFO L87 Difference]: Start difference. First operand 250 states and 262 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 01:54:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,303 INFO L93 Difference]: Finished difference Result 386 states and 404 transitions. [2021-10-16 01:54:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-10-16 01:54:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,306 INFO L225 Difference]: With dead ends: 386 [2021-10-16 01:54:36,307 INFO L226 Difference]: Without dead ends: 385 [2021-10-16 01:54:36,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-10-16 01:54:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 253. [2021-10-16 01:54:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 126 states have (on average 2.111111111111111) internal successors, (266), 252 states have internal predecessors, (266), 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) [2021-10-16 01:54:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 266 transitions. [2021-10-16 01:54:36,315 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 266 transitions. Word has length 5 [2021-10-16 01:54:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,316 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 266 transitions. [2021-10-16 01:54:36,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 01:54:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 266 transitions. [2021-10-16 01:54:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:54:36,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:54:36,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 01:54:36,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1178226029, now seen corresponding path program 1 times [2021-10-16 01:54:36,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133254185] [2021-10-16 01:54:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:36,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133254185] [2021-10-16 01:54:36,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133254185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:36,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4557432] [2021-10-16 01:54:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,392 INFO L87 Difference]: Start difference. First operand 253 states and 266 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2021-10-16 01:54:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,415 INFO L93 Difference]: Finished difference Result 263 states and 274 transitions. [2021-10-16 01:54:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 [2021-10-16 01:54:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,418 INFO L225 Difference]: With dead ends: 263 [2021-10-16 01:54:36,418 INFO L226 Difference]: Without dead ends: 262 [2021-10-16 01:54:36,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-16 01:54:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2021-10-16 01:54:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 125 states have (on average 2.112) internal successors, (264), 251 states have internal predecessors, (264), 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) [2021-10-16 01:54:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 264 transitions. [2021-10-16 01:54:36,426 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 264 transitions. Word has length 6 [2021-10-16 01:54:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,426 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 264 transitions. [2021-10-16 01:54:36,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2021-10-16 01:54:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 264 transitions. [2021-10-16 01:54:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:54:36,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:54:36,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 01:54:36,428 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1197398764, now seen corresponding path program 1 times [2021-10-16 01:54:36,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225981861] [2021-10-16 01:54:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:36,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225981861] [2021-10-16 01:54:36,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225981861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:36,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074551505] [2021-10-16 01:54:36,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,509 INFO L87 Difference]: Start difference. First operand 252 states and 264 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2021-10-16 01:54:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,756 INFO L93 Difference]: Finished difference Result 401 states and 421 transitions. [2021-10-16 01:54:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2021-10-16 01:54:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,759 INFO L225 Difference]: With dead ends: 401 [2021-10-16 01:54:36,759 INFO L226 Difference]: Without dead ends: 401 [2021-10-16 01:54:36,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-10-16 01:54:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 250. [2021-10-16 01:54:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 125 states have (on average 2.096) internal successors, (262), 249 states have internal predecessors, (262), 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) [2021-10-16 01:54:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 262 transitions. [2021-10-16 01:54:36,766 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 262 transitions. Word has length 6 [2021-10-16 01:54:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,768 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 262 transitions. [2021-10-16 01:54:36,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2021-10-16 01:54:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 262 transitions. [2021-10-16 01:54:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:54:36,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,769 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:54:36,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 01:54:36,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1197398765, now seen corresponding path program 1 times [2021-10-16 01:54:36,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674428571] [2021-10-16 01:54:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:36,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674428571] [2021-10-16 01:54:36,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674428571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:36,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161794711] [2021-10-16 01:54:36,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,856 INFO L87 Difference]: Start difference. First operand 250 states and 262 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2021-10-16 01:54:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,035 INFO L93 Difference]: Finished difference Result 327 states and 343 transitions. [2021-10-16 01:54:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2021-10-16 01:54:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,038 INFO L225 Difference]: With dead ends: 327 [2021-10-16 01:54:37,038 INFO L226 Difference]: Without dead ends: 327 [2021-10-16 01:54:37,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-16 01:54:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 248. [2021-10-16 01:54:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 125 states have (on average 2.08) internal successors, (260), 247 states have internal predecessors, (260), 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) [2021-10-16 01:54:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 260 transitions. [2021-10-16 01:54:37,045 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 260 transitions. Word has length 6 [2021-10-16 01:54:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,045 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 260 transitions. [2021-10-16 01:54:37,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2021-10-16 01:54:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 260 transitions. [2021-10-16 01:54:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 01:54:37,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,046 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:37,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 01:54:37,047 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:37,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1465193814, now seen corresponding path program 1 times [2021-10-16 01:54:37,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238252236] [2021-10-16 01:54:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:37,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238252236] [2021-10-16 01:54:37,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238252236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:37,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574777823] [2021-10-16 01:54:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:37,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:37,097 INFO L87 Difference]: Start difference. First operand 248 states and 260 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-16 01:54:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,154 INFO L93 Difference]: Finished difference Result 422 states and 443 transitions. [2021-10-16 01:54:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:54:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-10-16 01:54:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,157 INFO L225 Difference]: With dead ends: 422 [2021-10-16 01:54:37,157 INFO L226 Difference]: Without dead ends: 422 [2021-10-16 01:54:37,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-16 01:54:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 248. [2021-10-16 01:54:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 125 states have (on average 2.072) internal successors, (259), 247 states have internal predecessors, (259), 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) [2021-10-16 01:54:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 259 transitions. [2021-10-16 01:54:37,165 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 259 transitions. Word has length 11 [2021-10-16 01:54:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,165 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 259 transitions. [2021-10-16 01:54:37,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-16 01:54:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 259 transitions. [2021-10-16 01:54:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:54:37,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,167 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:37,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 01:54:37,168 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1823647033, now seen corresponding path program 1 times [2021-10-16 01:54:37,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178647105] [2021-10-16 01:54:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:37,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178647105] [2021-10-16 01:54:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178647105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:37,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024918266] [2021-10-16 01:54:37,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:54:37,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:54:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:37,263 INFO L87 Difference]: Start difference. First operand 248 states and 259 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) [2021-10-16 01:54:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,460 INFO L93 Difference]: Finished difference Result 820 states and 861 transitions. [2021-10-16 01:54:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:54:37,461 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 [2021-10-16 01:54:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,466 INFO L225 Difference]: With dead ends: 820 [2021-10-16 01:54:37,466 INFO L226 Difference]: Without dead ends: 820 [2021-10-16 01:54:37,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-10-16 01:54:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 250. [2021-10-16 01:54:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 128 states have (on average 2.0625) internal successors, (264), 249 states have internal predecessors, (264), 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) [2021-10-16 01:54:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 264 transitions. [2021-10-16 01:54:37,476 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 264 transitions. Word has length 12 [2021-10-16 01:54:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,477 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 264 transitions. [2021-10-16 01:54:37,477 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) [2021-10-16 01:54:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 264 transitions. [2021-10-16 01:54:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 01:54:37,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,478 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:37,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 01:54:37,479 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -698477090, now seen corresponding path program 1 times [2021-10-16 01:54:37,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534275842] [2021-10-16 01:54:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:37,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534275842] [2021-10-16 01:54:37,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534275842] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:37,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538680135] [2021-10-16 01:54:37,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:54:37,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:54:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:37,555 INFO L87 Difference]: Start difference. First operand 250 states and 264 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) [2021-10-16 01:54:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,128 INFO L93 Difference]: Finished difference Result 490 states and 518 transitions. [2021-10-16 01:54:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:54:38,129 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 [2021-10-16 01:54:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,132 INFO L225 Difference]: With dead ends: 490 [2021-10-16 01:54:38,132 INFO L226 Difference]: Without dead ends: 490 [2021-10-16 01:54:38,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-16 01:54:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 242. [2021-10-16 01:54:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 129 states have (on average 1.9844961240310077) internal successors, (256), 241 states have internal predecessors, (256), 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) [2021-10-16 01:54:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 256 transitions. [2021-10-16 01:54:38,148 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 256 transitions. Word has length 13 [2021-10-16 01:54:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,150 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 256 transitions. [2021-10-16 01:54:38,150 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) [2021-10-16 01:54:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 256 transitions. [2021-10-16 01:54:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 01:54:38,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,151 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:38,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 01:54:38,152 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash -698477089, now seen corresponding path program 1 times [2021-10-16 01:54:38,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822660121] [2021-10-16 01:54:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:38,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822660121] [2021-10-16 01:54:38,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822660121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:38,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085654900] [2021-10-16 01:54:38,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:54:38,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:54:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:38,258 INFO L87 Difference]: Start difference. First operand 242 states and 256 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) [2021-10-16 01:54:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,684 INFO L93 Difference]: Finished difference Result 576 states and 604 transitions. [2021-10-16 01:54:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:54:38,684 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 [2021-10-16 01:54:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,689 INFO L225 Difference]: With dead ends: 576 [2021-10-16 01:54:38,689 INFO L226 Difference]: Without dead ends: 576 [2021-10-16 01:54:38,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-16 01:54:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 282. [2021-10-16 01:54:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 169 states have (on average 1.8875739644970415) internal successors, (319), 281 states have internal predecessors, (319), 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) [2021-10-16 01:54:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 319 transitions. [2021-10-16 01:54:38,703 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 319 transitions. Word has length 13 [2021-10-16 01:54:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,704 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 319 transitions. [2021-10-16 01:54:38,704 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) [2021-10-16 01:54:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 319 transitions. [2021-10-16 01:54:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 01:54:38,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,706 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:38,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 01:54:38,706 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash 804274739, now seen corresponding path program 1 times [2021-10-16 01:54:38,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386986355] [2021-10-16 01:54:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 01:54:38,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386986355] [2021-10-16 01:54:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386986355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:38,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122373789] [2021-10-16 01:54:38,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:54:38,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:54:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:38,788 INFO L87 Difference]: Start difference. First operand 282 states and 319 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-16 01:54:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,978 INFO L93 Difference]: Finished difference Result 358 states and 398 transitions. [2021-10-16 01:54:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:38,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 19 [2021-10-16 01:54:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,981 INFO L225 Difference]: With dead ends: 358 [2021-10-16 01:54:38,981 INFO L226 Difference]: Without dead ends: 358 [2021-10-16 01:54:38,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:54:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-16 01:54:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 280. [2021-10-16 01:54:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 168 states have (on average 1.880952380952381) internal successors, (316), 279 states have internal predecessors, (316), 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) [2021-10-16 01:54:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 316 transitions. [2021-10-16 01:54:38,988 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 316 transitions. Word has length 19 [2021-10-16 01:54:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,989 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 316 transitions. [2021-10-16 01:54:38,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-16 01:54:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 316 transitions. [2021-10-16 01:54:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 01:54:38,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,990 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:38,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 01:54:38,990 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 770874066, now seen corresponding path program 1 times [2021-10-16 01:54:38,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812143928] [2021-10-16 01:54:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 01:54:39,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:39,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812143928] [2021-10-16 01:54:39,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812143928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:39,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:39,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:39,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724008298] [2021-10-16 01:54:39,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:54:39,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:54:39,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:39,048 INFO L87 Difference]: Start difference. First operand 280 states and 316 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-16 01:54:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:39,209 INFO L93 Difference]: Finished difference Result 278 states and 313 transitions. [2021-10-16 01:54:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 19 [2021-10-16 01:54:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:39,212 INFO L225 Difference]: With dead ends: 278 [2021-10-16 01:54:39,212 INFO L226 Difference]: Without dead ends: 278 [2021-10-16 01:54:39,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:54:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-16 01:54:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-10-16 01:54:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 167 states have (on average 1.874251497005988) internal successors, (313), 277 states have internal predecessors, (313), 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) [2021-10-16 01:54:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 313 transitions. [2021-10-16 01:54:39,219 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 313 transitions. Word has length 19 [2021-10-16 01:54:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:39,219 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 313 transitions. [2021-10-16 01:54:39,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-16 01:54:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 313 transitions. [2021-10-16 01:54:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:54:39,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:39,221 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:39,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 01:54:39,221 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:39,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1467799738, now seen corresponding path program 1 times [2021-10-16 01:54:39,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:39,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877684015] [2021-10-16 01:54:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:39,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:39,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:39,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877684015] [2021-10-16 01:54:39,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877684015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:39,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:39,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:39,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225353181] [2021-10-16 01:54:39,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:39,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:39,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:39,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:39,296 INFO L87 Difference]: Start difference. First operand 278 states and 313 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-16 01:54:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:39,693 INFO L93 Difference]: Finished difference Result 575 states and 603 transitions. [2021-10-16 01:54:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:54:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-10-16 01:54:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:39,697 INFO L225 Difference]: With dead ends: 575 [2021-10-16 01:54:39,697 INFO L226 Difference]: Without dead ends: 575 [2021-10-16 01:54:39,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:54:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-16 01:54:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 278. [2021-10-16 01:54:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 167 states have (on average 1.8682634730538923) internal successors, (312), 277 states have internal predecessors, (312), 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) [2021-10-16 01:54:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 312 transitions. [2021-10-16 01:54:39,705 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 312 transitions. Word has length 22 [2021-10-16 01:54:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:39,706 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 312 transitions. [2021-10-16 01:54:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-16 01:54:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 312 transitions. [2021-10-16 01:54:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:54:39,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:39,707 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:39,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 01:54:39,708 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash -74930744, now seen corresponding path program 1 times [2021-10-16 01:54:39,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:39,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563816380] [2021-10-16 01:54:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:39,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:39,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:39,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563816380] [2021-10-16 01:54:39,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563816380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:39,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:39,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:39,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709570905] [2021-10-16 01:54:39,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:39,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:39,763 INFO L87 Difference]: Start difference. First operand 278 states and 312 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-16 01:54:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:40,157 INFO L93 Difference]: Finished difference Result 573 states and 601 transitions. [2021-10-16 01:54:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:54:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-10-16 01:54:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:40,161 INFO L225 Difference]: With dead ends: 573 [2021-10-16 01:54:40,161 INFO L226 Difference]: Without dead ends: 573 [2021-10-16 01:54:40,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:54:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-10-16 01:54:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 278. [2021-10-16 01:54:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 167 states have (on average 1.8622754491017963) internal successors, (311), 277 states have internal predecessors, (311), 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) [2021-10-16 01:54:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-10-16 01:54:40,169 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 22 [2021-10-16 01:54:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:40,170 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-10-16 01:54:40,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-10-16 01:54:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-10-16 01:54:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:54:40,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,175 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:40,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 01:54:40,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1806081044, now seen corresponding path program 1 times [2021-10-16 01:54:40,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:40,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406476709] [2021-10-16 01:54:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:40,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:40,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406476709] [2021-10-16 01:54:40,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406476709] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:40,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:40,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:40,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154487405] [2021-10-16 01:54:40,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:54:40,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:54:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:40,285 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-16 01:54:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:40,991 INFO L93 Difference]: Finished difference Result 669 states and 706 transitions. [2021-10-16 01:54:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:54:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 24 [2021-10-16 01:54:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:40,996 INFO L225 Difference]: With dead ends: 669 [2021-10-16 01:54:40,997 INFO L226 Difference]: Without dead ends: 669 [2021-10-16 01:54:40,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:54:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-10-16 01:54:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 279. [2021-10-16 01:54:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 168 states have (on average 1.8630952380952381) internal successors, (313), 278 states have internal predecessors, (313), 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) [2021-10-16 01:54:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 313 transitions. [2021-10-16 01:54:41,006 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 313 transitions. Word has length 24 [2021-10-16 01:54:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:41,006 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 313 transitions. [2021-10-16 01:54:41,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-16 01:54:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 313 transitions. [2021-10-16 01:54:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:54:41,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:41,009 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:41,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-16 01:54:41,010 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1806081043, now seen corresponding path program 1 times [2021-10-16 01:54:41,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:41,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783736336] [2021-10-16 01:54:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:41,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:41,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:41,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783736336] [2021-10-16 01:54:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783736336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:41,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:41,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 01:54:41,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119433225] [2021-10-16 01:54:41,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:41,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:41,121 INFO L87 Difference]: Start difference. First operand 279 states and 313 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-16 01:54:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:41,788 INFO L93 Difference]: Finished difference Result 634 states and 666 transitions. [2021-10-16 01:54:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:54:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 24 [2021-10-16 01:54:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:41,793 INFO L225 Difference]: With dead ends: 634 [2021-10-16 01:54:41,793 INFO L226 Difference]: Without dead ends: 634 [2021-10-16 01:54:41,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:54:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-10-16 01:54:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 279. [2021-10-16 01:54:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 168 states have (on average 1.8571428571428572) internal successors, (312), 278 states have internal predecessors, (312), 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) [2021-10-16 01:54:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 312 transitions. [2021-10-16 01:54:41,802 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 312 transitions. Word has length 24 [2021-10-16 01:54:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:41,802 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 312 transitions. [2021-10-16 01:54:41,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-16 01:54:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 312 transitions. [2021-10-16 01:54:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:54:41,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:41,803 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:41,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-16 01:54:41,804 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1006190094, now seen corresponding path program 1 times [2021-10-16 01:54:41,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:41,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235766259] [2021-10-16 01:54:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:41,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:41,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:41,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235766259] [2021-10-16 01:54:41,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235766259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:41,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:41,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:41,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173373817] [2021-10-16 01:54:41,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:54:41,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:54:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:41,874 INFO L87 Difference]: Start difference. First operand 279 states and 312 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-16 01:54:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:42,529 INFO L93 Difference]: Finished difference Result 667 states and 704 transitions. [2021-10-16 01:54:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:54:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 24 [2021-10-16 01:54:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:42,533 INFO L225 Difference]: With dead ends: 667 [2021-10-16 01:54:42,533 INFO L226 Difference]: Without dead ends: 667 [2021-10-16 01:54:42,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:54:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-10-16 01:54:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 279. [2021-10-16 01:54:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 168 states have (on average 1.8511904761904763) internal successors, (311), 278 states have internal predecessors, (311), 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) [2021-10-16 01:54:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 311 transitions. [2021-10-16 01:54:42,543 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 311 transitions. Word has length 24 [2021-10-16 01:54:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:42,543 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 311 transitions. [2021-10-16 01:54:42,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-16 01:54:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 311 transitions. [2021-10-16 01:54:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:54:42,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:42,545 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:42,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-16 01:54:42,545 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:42,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1006190095, now seen corresponding path program 1 times [2021-10-16 01:54:42,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:42,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914839516] [2021-10-16 01:54:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:42,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:42,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:42,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914839516] [2021-10-16 01:54:42,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914839516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:42,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:42,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 01:54:42,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243001796] [2021-10-16 01:54:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:42,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:42,649 INFO L87 Difference]: Start difference. First operand 279 states and 311 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-16 01:54:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:43,302 INFO L93 Difference]: Finished difference Result 632 states and 664 transitions. [2021-10-16 01:54:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:54:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 24 [2021-10-16 01:54:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:43,306 INFO L225 Difference]: With dead ends: 632 [2021-10-16 01:54:43,306 INFO L226 Difference]: Without dead ends: 632 [2021-10-16 01:54:43,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:54:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-16 01:54:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 279. [2021-10-16 01:54:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 168 states have (on average 1.8452380952380953) internal successors, (310), 278 states have internal predecessors, (310), 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) [2021-10-16 01:54:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 310 transitions. [2021-10-16 01:54:43,316 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 310 transitions. Word has length 24 [2021-10-16 01:54:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:43,317 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 310 transitions. [2021-10-16 01:54:43,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-16 01:54:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 310 transitions. [2021-10-16 01:54:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 01:54:43,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:43,318 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:43,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-16 01:54:43,319 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:43,319 INFO L82 PathProgramCache]: Analyzing trace with hash -477088755, now seen corresponding path program 1 times [2021-10-16 01:54:43,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:43,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074927302] [2021-10-16 01:54:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:43,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:43,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:43,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074927302] [2021-10-16 01:54:43,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074927302] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:43,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:43,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-16 01:54:43,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107780277] [2021-10-16 01:54:43,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 01:54:43,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 01:54:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:54:43,462 INFO L87 Difference]: Start difference. First operand 279 states and 310 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-16 01:54:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:44,362 INFO L93 Difference]: Finished difference Result 567 states and 595 transitions. [2021-10-16 01:54:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 01:54:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2021-10-16 01:54:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:44,365 INFO L225 Difference]: With dead ends: 567 [2021-10-16 01:54:44,365 INFO L226 Difference]: Without dead ends: 567 [2021-10-16 01:54:44,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 377.3ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-16 01:54:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-16 01:54:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 280. [2021-10-16 01:54:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 169 states have (on average 1.8402366863905326) internal successors, (311), 279 states have internal predecessors, (311), 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) [2021-10-16 01:54:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 311 transitions. [2021-10-16 01:54:44,375 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 311 transitions. Word has length 26 [2021-10-16 01:54:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:44,375 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 311 transitions. [2021-10-16 01:54:44,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-16 01:54:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 311 transitions. [2021-10-16 01:54:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 01:54:44,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:44,377 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:44,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-16 01:54:44,377 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:44,378 INFO L82 PathProgramCache]: Analyzing trace with hash 581042639, now seen corresponding path program 1 times [2021-10-16 01:54:44,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:44,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079407017] [2021-10-16 01:54:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:44,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:44,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:44,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079407017] [2021-10-16 01:54:44,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079407017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:44,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:44,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-16 01:54:44,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303777551] [2021-10-16 01:54:44,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 01:54:44,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 01:54:44,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:54:44,518 INFO L87 Difference]: Start difference. First operand 280 states and 311 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-16 01:54:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:45,358 INFO L93 Difference]: Finished difference Result 565 states and 593 transitions. [2021-10-16 01:54:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 01:54:45,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2021-10-16 01:54:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:45,362 INFO L225 Difference]: With dead ends: 565 [2021-10-16 01:54:45,362 INFO L226 Difference]: Without dead ends: 565 [2021-10-16 01:54:45,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 350.0ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-16 01:54:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-10-16 01:54:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 280. [2021-10-16 01:54:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 169 states have (on average 1.834319526627219) internal successors, (310), 279 states have internal predecessors, (310), 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) [2021-10-16 01:54:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 310 transitions. [2021-10-16 01:54:45,373 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 310 transitions. Word has length 26 [2021-10-16 01:54:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:45,374 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 310 transitions. [2021-10-16 01:54:45,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-16 01:54:45,374 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 310 transitions. [2021-10-16 01:54:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 01:54:45,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:45,375 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:45,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-16 01:54:45,376 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:45,376 INFO L82 PathProgramCache]: Analyzing trace with hash 36433355, now seen corresponding path program 1 times [2021-10-16 01:54:45,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:45,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137242345] [2021-10-16 01:54:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:45,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:45,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:45,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137242345] [2021-10-16 01:54:45,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137242345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 01:54:45,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271794850] [2021-10-16 01:54:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:45,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:54:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:45,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:54:45,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:54:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:45,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 01:54:45,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:45,811 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 [2021-10-16 01:54:45,832 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 [2021-10-16 01:54:45,943 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 [2021-10-16 01:54:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:46,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:46,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271794850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:54:46,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905564727] [2021-10-16 01:54:46,352 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-10-16 01:54:46,352 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:54:46,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:54:46,365 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:54:46,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:54:46,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:54:46,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 01:54:46,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:54:46,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 01:54:46,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-16 01:54:46,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:54:46,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:54:46,493 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 01:54:46,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 01:54:46,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 01:54:46,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 01:54:46,498 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:46,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:54:46,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:46,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-16 01:54:46,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:54:46,509 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:83 [2021-10-16 01:54:46,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:46,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-16 01:54:46,723 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_196| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 01:54:46,728 INFO L168 Benchmark]: Toolchain (without parser) took 13959.32 ms. Allocated memory was 107.0 MB in the beginning and 207.6 MB in the end (delta: 100.7 MB). Free memory was 71.6 MB in the beginning and 85.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,729 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:46,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.55 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 71.3 MB in the beginning and 100.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.18 ms. Allocated memory is still 134.2 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,730 INFO L168 Benchmark]: Boogie Preprocessor took 84.45 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 95.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,730 INFO L168 Benchmark]: RCFGBuilder took 1385.60 ms. Allocated memory is still 134.2 MB. Free memory was 95.2 MB in the beginning and 101.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,730 INFO L168 Benchmark]: TraceAbstraction took 11834.22 ms. Allocated memory was 134.2 MB in the beginning and 207.6 MB in the end (delta: 73.4 MB). Free memory was 100.6 MB in the beginning and 85.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 90.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:46,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.55 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 71.3 MB in the beginning and 100.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.18 ms. Allocated memory is still 134.2 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.45 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 95.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1385.60 ms. Allocated memory is still 134.2 MB. Free memory was 95.2 MB in the beginning and 101.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11834.22 ms. Allocated memory was 134.2 MB in the beginning and 207.6 MB in the end (delta: 73.4 MB). Free memory was 100.6 MB in the beginning and 85.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 90.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_196| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_196|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 01:54:46,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 01:54:49,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:49,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:49,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:49,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:49,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:49,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:49,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:49,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:49,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:49,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:49,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:49,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:49,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:49,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:49,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:49,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:49,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:49,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:49,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:49,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:49,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:49,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:49,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:49,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:49,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:49,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:49,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:49,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:49,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:49,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:49,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:49,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:49,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:49,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:49,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:49,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:49,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:49,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:49,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:49,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:49,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 01:54:49,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:49,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:49,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:49,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:49,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:49,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:49,363 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:49,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:49,363 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:49,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 01:54:49,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 01:54:49,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:49,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:49,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 01:54:49,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:49,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:49,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:49,367 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 01:54:49,367 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 01:54:49,367 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 01:54:49,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:49,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:49,368 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:54:49,369 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:54:49,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:49,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:49,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:49,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:54:49,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:49,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:49,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:49,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:49,371 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:54:49,372 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:54:49,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:49,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:49,372 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_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 749ac904a4415c18bbecfeef551a8e5627795ea9 [2021-10-16 01:54:49,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:49,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:49,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:49,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:49,809 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:49,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-16 01:54:49,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/9207eb643/f347152fd9ef4139ad99f21e215573a8/FLAGe195e24b1 [2021-10-16 01:54:50,614 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:50,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-16 01:54:50,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/9207eb643/f347152fd9ef4139ad99f21e215573a8/FLAGe195e24b1 [2021-10-16 01:54:50,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/data/9207eb643/f347152fd9ef4139ad99f21e215573a8 [2021-10-16 01:54:50,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:50,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:50,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:50,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:50,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:50,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:50" (1/1) ... [2021-10-16 01:54:50,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570d5ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:50, skipping insertion in model container [2021-10-16 01:54:50,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:50" (1/1) ... [2021-10-16 01:54:50,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:50,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:51,322 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_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-16 01:54:51,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:51,409 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:51,443 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_ac5b4820-109f-4cba-b572-0911161be247/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-16 01:54:51,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:51,496 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:51,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51 WrapperNode [2021-10-16 01:54:51,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:51,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:51,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:51,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:51,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:51,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:51,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:51,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:51,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:51,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:51,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:51,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:51,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (1/1) ... [2021-10-16 01:54:51,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:51,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:51,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:54:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:54:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:53,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:53,019 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-16 01:54:53,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:53 BoogieIcfgContainer [2021-10-16 01:54:53,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:53,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:53,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:53,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:53,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:50" (1/3) ... [2021-10-16 01:54:53,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9ce646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:53, skipping insertion in model container [2021-10-16 01:54:53,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:51" (2/3) ... [2021-10-16 01:54:53,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9ce646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:53, skipping insertion in model container [2021-10-16 01:54:53,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:53" (3/3) ... [2021-10-16 01:54:53,030 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2021-10-16 01:54:53,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:53,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 131 error locations. [2021-10-16 01:54:53,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:53,091 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, mConcurrency=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 [2021-10-16 01:54:53,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 131 error locations. [2021-10-16 01:54:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 154 states have (on average 2.2467532467532467) internal successors, (346), 285 states have internal predecessors, (346), 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) [2021-10-16 01:54:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:54:53,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:53,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:54:53,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 28728144, now seen corresponding path program 1 times [2021-10-16 01:54:53,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:53,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793647159] [2021-10-16 01:54:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:53,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:53,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:53,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:54:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:53,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:54:53,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:53,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:53,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:53,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793647159] [2021-10-16 01:54:53,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793647159] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:53,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:53,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:53,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654137657] [2021-10-16 01:54:53,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:54:53,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:54:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:53,331 INFO L87 Difference]: Start difference. First operand has 286 states, 154 states have (on average 2.2467532467532467) internal successors, (346), 285 states have internal predecessors, (346), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 01:54:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:53,388 INFO L93 Difference]: Finished difference Result 286 states and 298 transitions. [2021-10-16 01:54:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:54:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-10-16 01:54:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:53,412 INFO L225 Difference]: With dead ends: 286 [2021-10-16 01:54:53,413 INFO L226 Difference]: Without dead ends: 284 [2021-10-16 01:54:53,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-16 01:54:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-16 01:54:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 153 states have (on average 1.934640522875817) internal successors, (296), 283 states have internal predecessors, (296), 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) [2021-10-16 01:54:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 296 transitions. [2021-10-16 01:54:53,471 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 296 transitions. Word has length 5 [2021-10-16 01:54:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:53,472 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 296 transitions. [2021-10-16 01:54:53,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 01:54:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 296 transitions. [2021-10-16 01:54:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:54:53,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:53,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:54:53,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:53,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:53,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 28699314, now seen corresponding path program 1 times [2021-10-16 01:54:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:53,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753098044] [2021-10-16 01:54:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:53,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:53,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:53,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:53,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:54:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:53,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:53,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:53,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:53,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753098044] [2021-10-16 01:54:53,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753098044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:53,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:53,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:53,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060941090] [2021-10-16 01:54:53,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:53,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:53,797 INFO L87 Difference]: Start difference. First operand 284 states and 296 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-16 01:54:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:54,340 INFO L93 Difference]: Finished difference Result 427 states and 445 transitions. [2021-10-16 01:54:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-10-16 01:54:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:54,343 INFO L225 Difference]: With dead ends: 427 [2021-10-16 01:54:54,343 INFO L226 Difference]: Without dead ends: 426 [2021-10-16 01:54:54,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-16 01:54:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 286. [2021-10-16 01:54:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 155 states have (on average 1.929032258064516) internal successors, (299), 285 states have internal predecessors, (299), 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) [2021-10-16 01:54:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 299 transitions. [2021-10-16 01:54:54,388 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 299 transitions. Word has length 5 [2021-10-16 01:54:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:54,390 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 299 transitions. [2021-10-16 01:54:54,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-16 01:54:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 299 transitions. [2021-10-16 01:54:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:54:54,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:54,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:54:54,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:54,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:54,599 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:54,600 INFO L82 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2021-10-16 01:54:54,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:54,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693975949] [2021-10-16 01:54:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:54,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:54,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:54,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:54:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:54,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:54,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:54,734 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 [2021-10-16 01:54:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:54,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:54,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:54,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693975949] [2021-10-16 01:54:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693975949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:54,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972557098] [2021-10-16 01:54:54,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:54,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:54,784 INFO L87 Difference]: Start difference. First operand 286 states and 299 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-16 01:54:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:55,534 INFO L93 Difference]: Finished difference Result 521 states and 543 transitions. [2021-10-16 01:54:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-10-16 01:54:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:55,537 INFO L225 Difference]: With dead ends: 521 [2021-10-16 01:54:55,538 INFO L226 Difference]: Without dead ends: 521 [2021-10-16 01:54:55,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-10-16 01:54:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 284. [2021-10-16 01:54:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 155 states have (on average 1.9161290322580644) internal successors, (297), 283 states have internal predecessors, (297), 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) [2021-10-16 01:54:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 297 transitions. [2021-10-16 01:54:55,559 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 297 transitions. Word has length 5 [2021-10-16 01:54:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:55,560 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 297 transitions. [2021-10-16 01:54:55,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-16 01:54:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 297 transitions. [2021-10-16 01:54:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:54:55,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:55,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:54:55,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:55,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:55,771 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:55,772 INFO L82 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-10-16 01:54:55,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:55,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599760677] [2021-10-16 01:54:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:55,773 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:55,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:55,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:55,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:54:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:55,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:55,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:55,851 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 [2021-10-16 01:54:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:55,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:55,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:55,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599760677] [2021-10-16 01:54:55,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599760677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:55,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:55,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 01:54:55,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12824250] [2021-10-16 01:54:55,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:55,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:55,957 INFO L87 Difference]: Start difference. First operand 284 states and 297 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-16 01:54:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:57,212 INFO L93 Difference]: Finished difference Result 440 states and 458 transitions. [2021-10-16 01:54:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:54:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-10-16 01:54:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:57,216 INFO L225 Difference]: With dead ends: 440 [2021-10-16 01:54:57,216 INFO L226 Difference]: Without dead ends: 440 [2021-10-16 01:54:57,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-16 01:54:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 282. [2021-10-16 01:54:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 155 states have (on average 1.903225806451613) internal successors, (295), 281 states have internal predecessors, (295), 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) [2021-10-16 01:54:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 295 transitions. [2021-10-16 01:54:57,226 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 295 transitions. Word has length 5 [2021-10-16 01:54:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:57,226 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 295 transitions. [2021-10-16 01:54:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-16 01:54:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 295 transitions. [2021-10-16 01:54:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:54:57,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:57,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:54:57,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:57,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:57,438 INFO L82 PathProgramCache]: Analyzing trace with hash 889663721, now seen corresponding path program 1 times [2021-10-16 01:54:57,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:57,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790475167] [2021-10-16 01:54:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:57,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:57,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:57,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 01:54:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:57,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:57,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:57,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:57,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:57,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790475167] [2021-10-16 01:54:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790475167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:57,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:57,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7698498] [2021-10-16 01:54:57,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:57,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:57,580 INFO L87 Difference]: Start difference. First operand 282 states and 295 transitions. Second operand has 3 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) [2021-10-16 01:54:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:57,635 INFO L93 Difference]: Finished difference Result 296 states and 307 transitions. [2021-10-16 01:54:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-10-16 01:54:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:57,646 INFO L225 Difference]: With dead ends: 296 [2021-10-16 01:54:57,646 INFO L226 Difference]: Without dead ends: 295 [2021-10-16 01:54:57,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-16 01:54:57,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 281. [2021-10-16 01:54:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 154 states have (on average 1.9025974025974026) internal successors, (293), 280 states have internal predecessors, (293), 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) [2021-10-16 01:54:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 293 transitions. [2021-10-16 01:54:57,654 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 293 transitions. Word has length 6 [2021-10-16 01:54:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:57,655 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 293 transitions. [2021-10-16 01:54:57,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-16 01:54:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 293 transitions. [2021-10-16 01:54:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:54:57,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:57,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:57,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 01:54:57,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:57,864 INFO L82 PathProgramCache]: Analyzing trace with hash 642085168, now seen corresponding path program 1 times [2021-10-16 01:54:57,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:57,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286821386] [2021-10-16 01:54:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:57,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:57,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 01:54:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:57,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:57,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:57,962 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 [2021-10-16 01:54:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:57,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:58,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:58,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286821386] [2021-10-16 01:54:58,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286821386] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:58,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:58,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:58,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712953992] [2021-10-16 01:54:58,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:58,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:58,002 INFO L87 Difference]: Start difference. First operand 281 states and 293 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-16 01:54:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:58,529 INFO L93 Difference]: Finished difference Result 452 states and 472 transitions. [2021-10-16 01:54:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2021-10-16 01:54:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:58,533 INFO L225 Difference]: With dead ends: 452 [2021-10-16 01:54:58,533 INFO L226 Difference]: Without dead ends: 452 [2021-10-16 01:54:58,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-16 01:54:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 279. [2021-10-16 01:54:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 154 states have (on average 1.8896103896103895) internal successors, (291), 278 states have internal predecessors, (291), 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) [2021-10-16 01:54:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 291 transitions. [2021-10-16 01:54:58,542 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 291 transitions. Word has length 9 [2021-10-16 01:54:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:58,543 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 291 transitions. [2021-10-16 01:54:58,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-16 01:54:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 291 transitions. [2021-10-16 01:54:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:54:58,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:58,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:58,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 01:54:58,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:58,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:54:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash 642085169, now seen corresponding path program 1 times [2021-10-16 01:54:58,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:58,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10335689] [2021-10-16 01:54:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:58,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:58,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 01:54:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:58,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:58,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:58,861 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 [2021-10-16 01:54:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:58,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:58,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:58,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10335689] [2021-10-16 01:54:58,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10335689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:58,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:58,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 01:54:58,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814116086] [2021-10-16 01:54:58,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:58,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:58,959 INFO L87 Difference]: Start difference. First operand 279 states and 291 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-10-16 01:54:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:59,809 INFO L93 Difference]: Finished difference Result 371 states and 387 transitions. [2021-10-16 01:54:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:54:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 9 [2021-10-16 01:54:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:59,812 INFO L225 Difference]: With dead ends: 371 [2021-10-16 01:54:59,812 INFO L226 Difference]: Without dead ends: 371 [2021-10-16 01:54:59,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-16 01:54:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 277. [2021-10-16 01:54:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 154 states have (on average 1.8766233766233766) internal successors, (289), 276 states have internal predecessors, (289), 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) [2021-10-16 01:54:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 289 transitions. [2021-10-16 01:54:59,820 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 289 transitions. Word has length 9 [2021-10-16 01:54:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:59,821 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 289 transitions. [2021-10-16 01:54:59,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-10-16 01:54:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 289 transitions. [2021-10-16 01:54:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 01:54:59,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:59,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:59,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 01:55:00,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:00,036 INFO L82 PathProgramCache]: Analyzing trace with hash 580718179, now seen corresponding path program 1 times [2021-10-16 01:55:00,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:00,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796357169] [2021-10-16 01:55:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:00,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:00,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:00,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 01:55:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:00,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:00,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:00,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:00,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796357169] [2021-10-16 01:55:00,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796357169] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:00,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:00,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:55:00,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824047299] [2021-10-16 01:55:00,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:55:00,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:55:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:55:00,230 INFO L87 Difference]: Start difference. First operand 277 states and 289 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-16 01:55:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:00,338 INFO L93 Difference]: Finished difference Result 480 states and 501 transitions. [2021-10-16 01:55:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:55:00,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-16 01:55:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:00,341 INFO L225 Difference]: With dead ends: 480 [2021-10-16 01:55:00,342 INFO L226 Difference]: Without dead ends: 480 [2021-10-16 01:55:00,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:55:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-16 01:55:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 277. [2021-10-16 01:55:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 154 states have (on average 1.87012987012987) internal successors, (288), 276 states have internal predecessors, (288), 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) [2021-10-16 01:55:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 288 transitions. [2021-10-16 01:55:00,350 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 288 transitions. Word has length 14 [2021-10-16 01:55:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:00,351 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 288 transitions. [2021-10-16 01:55:00,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-16 01:55:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 288 transitions. [2021-10-16 01:55:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 01:55:00,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:00,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:00,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:00,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,559 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:00,560 INFO L82 PathProgramCache]: Analyzing trace with hash 822379352, now seen corresponding path program 1 times [2021-10-16 01:55:00,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:00,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714733316] [2021-10-16 01:55:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:00,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:00,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:00,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 01:55:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:00,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:00,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:00,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:00,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:00,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714733316] [2021-10-16 01:55:00,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714733316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:00,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:00,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 01:55:00,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476903058] [2021-10-16 01:55:00,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:55:00,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:00,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:55:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:55:00,774 INFO L87 Difference]: Start difference. First operand 277 states and 288 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-16 01:55:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:01,146 INFO L93 Difference]: Finished difference Result 929 states and 970 transitions. [2021-10-16 01:55:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:55:01,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-10-16 01:55:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:01,152 INFO L225 Difference]: With dead ends: 929 [2021-10-16 01:55:01,152 INFO L226 Difference]: Without dead ends: 929 [2021-10-16 01:55:01,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:55:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-10-16 01:55:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 279. [2021-10-16 01:55:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 157 states have (on average 1.8662420382165605) internal successors, (293), 278 states have internal predecessors, (293), 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) [2021-10-16 01:55:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 293 transitions. [2021-10-16 01:55:01,163 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 293 transitions. Word has length 15 [2021-10-16 01:55:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:01,163 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 293 transitions. [2021-10-16 01:55:01,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-16 01:55:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 293 transitions. [2021-10-16 01:55:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 01:55:01,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:01,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:01,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:01,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:01,376 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:01,376 INFO L82 PathProgramCache]: Analyzing trace with hash -276037781, now seen corresponding path program 1 times [2021-10-16 01:55:01,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:01,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339248065] [2021-10-16 01:55:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:01,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:01,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 01:55:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:01,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:01,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:01,522 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 [2021-10-16 01:55:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:01,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:01,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:01,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339248065] [2021-10-16 01:55:01,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339248065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:01,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:01,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:55:01,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117529327] [2021-10-16 01:55:01,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:55:01,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:55:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:55:01,652 INFO L87 Difference]: Start difference. First operand 279 states and 293 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-16 01:55:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:02,976 INFO L93 Difference]: Finished difference Result 560 states and 588 transitions. [2021-10-16 01:55:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:55:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-16 01:55:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:02,980 INFO L225 Difference]: With dead ends: 560 [2021-10-16 01:55:02,980 INFO L226 Difference]: Without dead ends: 560 [2021-10-16 01:55:02,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:55:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-16 01:55:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 271. [2021-10-16 01:55:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 158 states have (on average 1.8037974683544304) internal successors, (285), 270 states have internal predecessors, (285), 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) [2021-10-16 01:55:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 285 transitions. [2021-10-16 01:55:02,990 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 285 transitions. Word has length 16 [2021-10-16 01:55:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:02,990 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 285 transitions. [2021-10-16 01:55:02,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-16 01:55:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 285 transitions. [2021-10-16 01:55:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 01:55:02,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:02,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:03,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:03,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:03,203 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash -276037780, now seen corresponding path program 1 times [2021-10-16 01:55:03,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:03,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436794569] [2021-10-16 01:55:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:03,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:03,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:03,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 01:55:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:03,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 01:55:03,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:03,394 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 [2021-10-16 01:55:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:03,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:03,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:03,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436794569] [2021-10-16 01:55:03,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436794569] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:03,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:03,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:55:03,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592295708] [2021-10-16 01:55:03,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:55:03,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:03,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:55:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:55:03,797 INFO L87 Difference]: Start difference. First operand 271 states and 285 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 01:55:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:06,643 INFO L93 Difference]: Finished difference Result 662 states and 692 transitions. [2021-10-16 01:55:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 [2021-10-16 01:55:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:06,648 INFO L225 Difference]: With dead ends: 662 [2021-10-16 01:55:06,649 INFO L226 Difference]: Without dead ends: 662 [2021-10-16 01:55:06,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 339.4ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:55:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-16 01:55:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 307. [2021-10-16 01:55:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 197 states have (on average 1.7309644670050761) internal successors, (341), 306 states have internal predecessors, (341), 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) [2021-10-16 01:55:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 341 transitions. [2021-10-16 01:55:06,662 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 341 transitions. Word has length 16 [2021-10-16 01:55:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:06,662 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 341 transitions. [2021-10-16 01:55:06,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 01:55:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 341 transitions. [2021-10-16 01:55:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:55:06,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:06,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:06,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 01:55:06,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:06,874 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1634517696, now seen corresponding path program 1 times [2021-10-16 01:55:06,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:06,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197907781] [2021-10-16 01:55:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:06,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:06,876 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:06,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 01:55:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:07,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:07,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:07,120 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 [2021-10-16 01:55:07,126 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 [2021-10-16 01:55:07,334 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 29 treesize of output 21 [2021-10-16 01:55:07,342 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 18 treesize of output 10 [2021-10-16 01:55:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:07,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:07,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:07,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197907781] [2021-10-16 01:55:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197907781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:07,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1522409987] [2021-10-16 01:55:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:07,628 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:07,631 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:07,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 01:55:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:07,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:07,995 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 [2021-10-16 01:55:08,005 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 [2021-10-16 01:55:08,149 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 29 treesize of output 21 [2021-10-16 01:55:08,152 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 18 treesize of output 10 [2021-10-16 01:55:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:08,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:08,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1522409987] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:08,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588456487] [2021-10-16 01:55:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:08,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:08,340 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:08,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 01:55:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:08,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:08,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:08,680 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 37 treesize of output 25 [2021-10-16 01:55:08,684 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 22 treesize of output 10 [2021-10-16 01:55:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 01:55:08,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 01:55:08,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588456487] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:08,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 01:55:08,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 7, 8, 7] total 13 [2021-10-16 01:55:08,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250508311] [2021-10-16 01:55:08,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:08,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-16 01:55:08,835 INFO L87 Difference]: Start difference. First operand 307 states and 341 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-10-16 01:55:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:09,619 INFO L93 Difference]: Finished difference Result 391 states and 428 transitions. [2021-10-16 01:55:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:55:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 22 [2021-10-16 01:55:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:09,622 INFO L225 Difference]: With dead ends: 391 [2021-10-16 01:55:09,622 INFO L226 Difference]: Without dead ends: 391 [2021-10-16 01:55:09,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 267.1ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:55:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-16 01:55:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2021-10-16 01:55:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 196 states have (on average 1.7244897959183674) internal successors, (338), 304 states have internal predecessors, (338), 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) [2021-10-16 01:55:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 338 transitions. [2021-10-16 01:55:09,630 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 338 transitions. Word has length 22 [2021-10-16 01:55:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:09,631 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 338 transitions. [2021-10-16 01:55:09,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-10-16 01:55:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 338 transitions. [2021-10-16 01:55:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:55:09,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:09,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:09,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:09,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:10,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:10,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:10,244 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1667918369, now seen corresponding path program 1 times [2021-10-16 01:55:10,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:10,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678563082] [2021-10-16 01:55:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:10,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:10,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:10,246 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:10,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 01:55:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:10,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:10,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:10,538 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 [2021-10-16 01:55:10,545 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 [2021-10-16 01:55:10,672 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 29 treesize of output 21 [2021-10-16 01:55:10,675 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 18 treesize of output 10 [2021-10-16 01:55:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:10,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:10,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:10,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678563082] [2021-10-16 01:55:10,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678563082] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:10,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1745089296] [2021-10-16 01:55:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:10,931 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:10,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:10,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:10,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 01:55:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:11,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:11,440 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 40 treesize of output 28 [2021-10-16 01:55:11,443 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 25 treesize of output 13 [2021-10-16 01:55:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 01:55:11,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 01:55:11,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1745089296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:11,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 01:55:11,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 7] total 15 [2021-10-16 01:55:11,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563274232] [2021-10-16 01:55:11,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:11,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:55:11,622 INFO L87 Difference]: Start difference. First operand 305 states and 338 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-10-16 01:55:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:12,180 INFO L93 Difference]: Finished difference Result 303 states and 335 transitions. [2021-10-16 01:55:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:55:12,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 22 [2021-10-16 01:55:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:12,184 INFO L225 Difference]: With dead ends: 303 [2021-10-16 01:55:12,185 INFO L226 Difference]: Without dead ends: 303 [2021-10-16 01:55:12,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 338.4ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-16 01:55:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-16 01:55:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-10-16 01:55:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 195 states have (on average 1.7179487179487178) internal successors, (335), 302 states have internal predecessors, (335), 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) [2021-10-16 01:55:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 335 transitions. [2021-10-16 01:55:12,192 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 335 transitions. Word has length 22 [2021-10-16 01:55:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:12,193 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 335 transitions. [2021-10-16 01:55:12,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-10-16 01:55:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 335 transitions. [2021-10-16 01:55:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 01:55:12,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:12,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:12,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-10-16 01:55:12,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:12,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:12,597 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1866453673, now seen corresponding path program 1 times [2021-10-16 01:55:12,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:12,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919591150] [2021-10-16 01:55:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:12,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:12,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:12,600 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:12,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 01:55:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 01:55:12,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:12,904 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 16 treesize of output 12 [2021-10-16 01:55:12,931 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 01:55:12,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 21 [2021-10-16 01:55:13,015 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 16 treesize of output 8 [2021-10-16 01:55:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:13,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:13,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:13,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919591150] [2021-10-16 01:55:13,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919591150] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:13,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:13,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-16 01:55:13,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506423062] [2021-10-16 01:55:13,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:13,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:13,149 INFO L87 Difference]: Start difference. First operand 303 states and 335 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-16 01:55:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:14,324 INFO L93 Difference]: Finished difference Result 635 states and 663 transitions. [2021-10-16 01:55:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:55:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 25 [2021-10-16 01:55:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:14,329 INFO L225 Difference]: With dead ends: 635 [2021-10-16 01:55:14,329 INFO L226 Difference]: Without dead ends: 635 [2021-10-16 01:55:14,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:55:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-10-16 01:55:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 303. [2021-10-16 01:55:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 195 states have (on average 1.7128205128205127) internal successors, (334), 302 states have internal predecessors, (334), 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) [2021-10-16 01:55:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 334 transitions. [2021-10-16 01:55:14,338 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 334 transitions. Word has length 25 [2021-10-16 01:55:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:14,338 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 334 transitions. [2021-10-16 01:55:14,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-16 01:55:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 334 transitions. [2021-10-16 01:55:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 01:55:14,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:14,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:14,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:14,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:14,547 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:14,547 INFO L82 PathProgramCache]: Analyzing trace with hash -473584679, now seen corresponding path program 1 times [2021-10-16 01:55:14,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:14,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468395001] [2021-10-16 01:55:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:14,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:14,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:14,550 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:14,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 01:55:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:14,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:14,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:14,986 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 [2021-10-16 01:55:14,992 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 [2021-10-16 01:55:15,118 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 29 treesize of output 21 [2021-10-16 01:55:15,121 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 18 treesize of output 10 [2021-10-16 01:55:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:15,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:15,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:15,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468395001] [2021-10-16 01:55:15,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468395001] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:15,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943492223] [2021-10-16 01:55:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:15,355 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:15,355 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 01:55:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:15,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:15,864 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 [2021-10-16 01:55:15,879 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 [2021-10-16 01:55:16,001 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 29 treesize of output 21 [2021-10-16 01:55:16,005 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 18 treesize of output 10 [2021-10-16 01:55:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:16,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:16,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [943492223] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:16,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81955512] [2021-10-16 01:55:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:16,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:16,225 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:16,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 01:55:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:16,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 01:55:16,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:16,692 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 16 treesize of output 12 [2021-10-16 01:55:16,740 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 01:55:16,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 21 [2021-10-16 01:55:16,849 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 16 treesize of output 8 [2021-10-16 01:55:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:16,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:16,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81955512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:16,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 01:55:16,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8, 7, 8, 7] total 17 [2021-10-16 01:55:16,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197372591] [2021-10-16 01:55:16,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:16,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:16,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:16,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-10-16 01:55:16,995 INFO L87 Difference]: Start difference. First operand 303 states and 334 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-16 01:55:17,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:17,940 INFO L93 Difference]: Finished difference Result 633 states and 661 transitions. [2021-10-16 01:55:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 01:55:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 25 [2021-10-16 01:55:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:17,946 INFO L225 Difference]: With dead ends: 633 [2021-10-16 01:55:17,946 INFO L226 Difference]: Without dead ends: 633 [2021-10-16 01:55:17,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 417.6ms TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-10-16 01:55:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-10-16 01:55:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 303. [2021-10-16 01:55:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 195 states have (on average 1.7076923076923076) internal successors, (333), 302 states have internal predecessors, (333), 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) [2021-10-16 01:55:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 333 transitions. [2021-10-16 01:55:17,980 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 333 transitions. Word has length 25 [2021-10-16 01:55:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:17,980 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 333 transitions. [2021-10-16 01:55:17,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-16 01:55:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 333 transitions. [2021-10-16 01:55:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 01:55:17,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:17,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:17,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:18,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:18,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:18,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:18,582 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1634543997, now seen corresponding path program 1 times [2021-10-16 01:55:18,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:18,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729826963] [2021-10-16 01:55:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:18,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:18,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:18,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 01:55:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:18,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 01:55:18,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:18,990 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 [2021-10-16 01:55:19,038 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 01:55:19,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-16 01:55:19,096 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 27 treesize of output 23 [2021-10-16 01:55:19,145 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 01:55:19,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 32 [2021-10-16 01:55:19,412 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 41 treesize of output 29 [2021-10-16 01:55:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:19,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:27,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:27,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729826963] [2021-10-16 01:55:27,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729826963] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:27,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:27,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 01:55:27,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122949413] [2021-10-16 01:55:27,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 01:55:27,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 01:55:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=122, Unknown=4, NotChecked=0, Total=156 [2021-10-16 01:55:27,909 INFO L87 Difference]: Start difference. First operand 303 states and 333 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 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) [2021-10-16 01:55:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:30,923 INFO L93 Difference]: Finished difference Result 757 states and 794 transitions. [2021-10-16 01:55:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:30,924 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 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 27 [2021-10-16 01:55:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:30,927 INFO L225 Difference]: With dead ends: 757 [2021-10-16 01:55:30,927 INFO L226 Difference]: Without dead ends: 757 [2021-10-16 01:55:30,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 8872.5ms TimeCoverageRelationStatistics Valid=102, Invalid=236, Unknown=4, NotChecked=0, Total=342 [2021-10-16 01:55:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-10-16 01:55:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 304. [2021-10-16 01:55:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 196 states have (on average 1.7091836734693877) internal successors, (335), 303 states have internal predecessors, (335), 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) [2021-10-16 01:55:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 335 transitions. [2021-10-16 01:55:30,937 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 335 transitions. Word has length 27 [2021-10-16 01:55:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:30,938 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 335 transitions. [2021-10-16 01:55:30,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 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) [2021-10-16 01:55:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 335 transitions. [2021-10-16 01:55:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 01:55:30,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:30,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:30,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-16 01:55:31,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:31,147 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:31,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1634543998, now seen corresponding path program 1 times [2021-10-16 01:55:31,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:31,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347677910] [2021-10-16 01:55:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:31,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:31,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:31,149 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:31,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 01:55:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:31,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 01:55:31,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:31,519 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 [2021-10-16 01:55:31,526 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 [2021-10-16 01:55:31,622 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 01:55:31,622 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 18 treesize of output 18 [2021-10-16 01:55:31,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-16 01:55:31,698 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 21 treesize of output 17 [2021-10-16 01:55:31,710 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 [2021-10-16 01:55:31,773 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 01:55:31,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 26 [2021-10-16 01:55:31,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:55:31,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 01:55:32,153 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 44 treesize of output 32 [2021-10-16 01:55:32,161 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 29 treesize of output 21 [2021-10-16 01:55:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:32,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:35,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:35,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347677910] [2021-10-16 01:55:35,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347677910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:35,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:35,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-16 01:55:35,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229306902] [2021-10-16 01:55:35,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 01:55:35,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 01:55:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-10-16 01:55:35,440 INFO L87 Difference]: Start difference. First operand 304 states and 335 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 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) [2021-10-16 01:55:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:51,164 INFO L93 Difference]: Finished difference Result 909 states and 950 transitions. [2021-10-16 01:55:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-16 01:55:51,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 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 27 [2021-10-16 01:55:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:51,169 INFO L225 Difference]: With dead ends: 909 [2021-10-16 01:55:51,170 INFO L226 Difference]: Without dead ends: 909 [2021-10-16 01:55:51,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 10555.1ms TimeCoverageRelationStatistics Valid=263, Invalid=665, Unknown=2, NotChecked=0, Total=930 [2021-10-16 01:55:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-10-16 01:55:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 304. [2021-10-16 01:55:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 303 states have internal predecessors, (334), 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) [2021-10-16 01:55:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 334 transitions. [2021-10-16 01:55:51,180 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 334 transitions. Word has length 27 [2021-10-16 01:55:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:51,181 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 334 transitions. [2021-10-16 01:55:51,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 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) [2021-10-16 01:55:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 334 transitions. [2021-10-16 01:55:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 01:55:51,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:51,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:51,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:51,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:51,395 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash 151847839, now seen corresponding path program 1 times [2021-10-16 01:55:51,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:51,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292372346] [2021-10-16 01:55:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:51,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:51,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:51,397 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 01:55:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:51,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:51,937 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 [2021-10-16 01:55:51,948 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 [2021-10-16 01:55:52,103 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 29 treesize of output 21 [2021-10-16 01:55:52,112 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 18 treesize of output 10 [2021-10-16 01:55:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:52,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:52,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:52,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292372346] [2021-10-16 01:55:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292372346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:52,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [232720542] [2021-10-16 01:55:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:52,445 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:52,446 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:52,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 01:55:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 01:55:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:53,175 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 [2021-10-16 01:55:53,184 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 [2021-10-16 01:55:53,318 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 29 treesize of output 21 [2021-10-16 01:55:53,321 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 18 treesize of output 10 [2021-10-16 01:55:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:53,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:53,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [232720542] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:53,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867223348] [2021-10-16 01:55:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:53,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:53,643 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:53,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 01:55:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:54,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 01:55:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:54,410 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 [2021-10-16 01:55:54,422 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 [2021-10-16 01:55:54,514 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 29 treesize of output 21 [2021-10-16 01:55:54,519 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 18 treesize of output 10 [2021-10-16 01:55:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:54,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:54,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867223348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:54,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 01:55:54,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8, 7] total 12 [2021-10-16 01:55:54,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823483435] [2021-10-16 01:55:54,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 01:55:54,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:54,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 01:55:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:55:54,744 INFO L87 Difference]: Start difference. First operand 304 states and 334 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-10-16 01:55:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:56,749 INFO L93 Difference]: Finished difference Result 503 states and 542 transitions. [2021-10-16 01:55:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:55:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 27 [2021-10-16 01:55:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:56,753 INFO L225 Difference]: With dead ends: 503 [2021-10-16 01:55:56,753 INFO L226 Difference]: Without dead ends: 503 [2021-10-16 01:55:56,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 424.9ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-16 01:55:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-10-16 01:55:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 318. [2021-10-16 01:55:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 210 states have (on average 1.661904761904762) internal successors, (349), 317 states have internal predecessors, (349), 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) [2021-10-16 01:55:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 349 transitions. [2021-10-16 01:55:56,761 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 349 transitions. Word has length 27 [2021-10-16 01:55:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:56,762 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 349 transitions. [2021-10-16 01:55:56,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-10-16 01:55:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 349 transitions. [2021-10-16 01:55:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 01:55:56,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:56,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:56,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-16 01:55:56,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-16 01:55:57,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:57,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 127 more)] === [2021-10-16 01:55:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1161242338, now seen corresponding path program 1 times [2021-10-16 01:55:57,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:57,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228011181] [2021-10-16 01:55:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:57,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:57,368 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:57,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 01:55:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:57,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 01:55:57,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:57,882 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 [2021-10-16 01:55:57,922 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 [2021-10-16 01:55:57,936 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 [2021-10-16 01:55:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:55:57,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 01:55:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:55:58,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 01:55:58,030 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 01:55:58,031 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 20 treesize of output 20 [2021-10-16 01:55:58,112 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 01:55:58,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 40 [2021-10-16 01:55:58,132 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-16 01:55:58,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 41 [2021-10-16 01:55:58,253 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-10-16 01:55:58,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 61 [2021-10-16 01:55:58,293 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-10-16 01:55:58,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-10-16 01:55:58,840 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-16 01:55:58,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 42 [2021-10-16 01:55:58,870 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-16 01:55:58,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 23 [2021-10-16 01:55:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:56:01,502 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~item~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~data~0.base (_ BitVec 32)) (ULTIMATE.start_main_~data~0.offset (_ BitVec 32))) (= (let ((.cse1 (bvadd (_ bv4 32) ULTIMATE.start_main_~item~0.offset))) (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.base) .cse1 ULTIMATE.start_main_~data~0.base))) (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base .cse0) (select .cse0 ULTIMATE.start_main_~item~0.offset))) (select (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.offset) .cse1 ULTIMATE.start_main_~data~0.offset) ULTIMATE.start_main_~item~0.offset))) (_ bv0 32))) (forall ((ULTIMATE.start_main_~item~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~data~0.base (_ BitVec 32)) (ULTIMATE.start_main_~data~0.offset (_ BitVec 32))) (= (_ bv0 32) (let ((.cse3 (bvadd (_ bv4 32) ULTIMATE.start_main_~item~0.offset))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.offset) .cse3 ULTIMATE.start_main_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base .cse2) (select (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.base) .cse3 ULTIMATE.start_main_~data~0.base) ULTIMATE.start_main_~item~0.offset)) (select .cse2 ULTIMATE.start_main_~item~0.offset))))))) is different from false [2021-10-16 01:56:17,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:56:17,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-16 01:56:17,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:56:17,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-10-16 01:56:19,923 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_40 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_40)))) (and (forall ((v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (let ((.cse2 (bvadd c_ULTIMATE.start_main_~node~1.offset (_ bv4 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~node~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~node~1.base) .cse2 v_DerPreprocessor_1))) (.cse3 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset))) (let ((.cse1 (store (store (select .cse0 v_ULTIMATE.start_main_~item~0.base_40) c_ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.offset) .cse3 c_ULTIMATE.start_main_~data~0.offset))) (select (select (store .cse0 v_ULTIMATE.start_main_~item~0.base_40 .cse1) (select (store (store (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~node~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~node~1.base) .cse2 v_DerPreprocessor_2)) v_ULTIMATE.start_main_~item~0.base_40) c_ULTIMATE.start_main_~item~0.offset c_ULTIMATE.start_main_~node~1.base) .cse3 c_ULTIMATE.start_main_~data~0.base) c_ULTIMATE.start_main_~item~0.offset)) (select .cse1 c_ULTIMATE.start_main_~item~0.offset))))) (_ bv0 32))) (forall ((v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (= (_ bv0 32) (let ((.cse7 (bvadd c_ULTIMATE.start_main_~node~1.offset (_ bv4 32))) (.cse6 (bvadd (_ bv4 32) v_prenex_1))) (select (let ((.cse4 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~node~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~node~1.base) .cse7 v_DerPreprocessor_2)))) (let ((.cse5 (store (store (select .cse4 v_ULTIMATE.start_main_~item~0.base_40) v_prenex_1 c_ULTIMATE.start_main_~node~1.base) .cse6 v_prenex_3))) (select (store .cse4 v_ULTIMATE.start_main_~item~0.base_40 .cse5) (select .cse5 v_prenex_1)))) (select (store (store (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~node~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~node~1.base) .cse7 v_DerPreprocessor_1)) v_ULTIMATE.start_main_~item~0.base_40) v_prenex_1 c_ULTIMATE.start_main_~node~1.offset) .cse6 v_prenex_2) v_prenex_1)))))))) is different from false [2021-10-16 01:56:20,201 INFO L354 Elim1Store]: treesize reduction 561, result has 10.0 percent of original size [2021-10-16 01:56:20,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 257751 treesize of output 197681 [2021-10-16 01:56:22,714 INFO L354 Elim1Store]: treesize reduction 378, result has 8.9 percent of original size [2021-10-16 01:56:22,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197938 treesize of output 144617 [2021-10-16 01:56:23,448 INFO L354 Elim1Store]: treesize reduction 40, result has 18.4 percent of original size [2021-10-16 01:56:23,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 144485 treesize of output 136543 [2021-10-16 01:56:23,767 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 01:56:23,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 136543 treesize of output 128611 [2021-10-16 01:56:24,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:56:24,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228011181] [2021-10-16 01:56:24,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-10-16 01:56:24,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1212982287] [2021-10-16 01:56:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:56:24,180 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:56:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:56:24,183 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:56:24,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-16 01:56:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:56:24,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 01:56:24,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:56:24,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@43acae62 [2021-10-16 01:56:24,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331037806] [2021-10-16 01:56:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:56:24,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:56:24,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:56:24,927 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:56:24,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-16 01:56:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:56:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 01:56:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:56:25,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@43acae62 [2021-10-16 01:56:25,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:56:25,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 01:56:25,472 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 01:56:25,472 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 01:56:25,481 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 01:56:25,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 01:56:25,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 01:56:25,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 01:56:25,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 01:56:25,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 01:56:25,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 01:56:25,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 01:56:25,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 01:56:25,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-16 01:56:25,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-16 01:56:25,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-16 01:56:25,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION [2021-10-16 01:56:25,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATION [2021-10-16 01:56:25,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION [2021-10-16 01:56:25,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr90REQUIRES_VIOLATION [2021-10-16 01:56:25,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr91REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr92REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr93REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr94REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr95REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr96REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr97REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr98REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr99REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr100REQUIRES_VIOLATION [2021-10-16 01:56:25,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr102ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr105REQUIRES_VIOLATION [2021-10-16 01:56:25,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr106REQUIRES_VIOLATION [2021-10-16 01:56:25,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr107ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr108REQUIRES_VIOLATION [2021-10-16 01:56:25,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr109REQUIRES_VIOLATION [2021-10-16 01:56:25,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr111REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr112REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr113REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr114REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr115REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr116REQUIRES_VIOLATION [2021-10-16 01:56:25,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr117REQUIRES_VIOLATION [2021-10-16 01:56:25,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr118REQUIRES_VIOLATION [2021-10-16 01:56:25,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr119ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr120REQUIRES_VIOLATION [2021-10-16 01:56:25,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr121REQUIRES_VIOLATION [2021-10-16 01:56:25,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr122ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr123ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr124ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr125REQUIRES_VIOLATION [2021-10-16 01:56:25,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr126REQUIRES_VIOLATION [2021-10-16 01:56:25,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr127ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr128ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr129ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 01:56:25,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr130ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 01:56:25,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-16 01:56:25,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-16 01:56:25,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-10-16 01:56:26,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 01:56:26,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:56:26,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:56:26 BoogieIcfgContainer [2021-10-16 01:56:26,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:56:26,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:56:26,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:56:26,129 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:56:26,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:53" (3/4) ... [2021-10-16 01:56:26,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:56:26,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:56:26,154 INFO L168 Benchmark]: Toolchain (without parser) took 95264.57 ms. Allocated memory was 58.7 MB in the beginning and 377.5 MB in the end (delta: 318.8 MB). Free memory was 37.7 MB in the beginning and 320.3 MB in the end (delta: -282.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,155 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:56:26,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.10 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 33.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.57 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 30.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,156 INFO L168 Benchmark]: Boogie Preprocessor took 61.97 ms. Allocated memory is still 58.7 MB. Free memory was 30.1 MB in the beginning and 27.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,156 INFO L168 Benchmark]: RCFGBuilder took 1390.07 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 27.0 MB in the beginning and 49.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,157 INFO L168 Benchmark]: TraceAbstraction took 93105.32 ms. Allocated memory was 79.7 MB in the beginning and 377.5 MB in the end (delta: 297.8 MB). Free memory was 49.5 MB in the beginning and 320.3 MB in the end (delta: -270.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:26,157 INFO L168 Benchmark]: Witness Printer took 24.41 ms. Allocated memory is still 377.5 MB. Free memory was 320.3 MB in the beginning and 320.3 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:56:26,159 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 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.10 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 33.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.57 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 30.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.97 ms. Allocated memory is still 58.7 MB. Free memory was 30.1 MB in the beginning and 27.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1390.07 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 27.0 MB in the beginning and 49.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 93105.32 ms. Allocated memory was 79.7 MB in the beginning and 377.5 MB in the end (delta: 297.8 MB). Free memory was 49.5 MB in the beginning and 320.3 MB in the end (delta: -270.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 24.41 ms. Allocated memory is still 377.5 MB. Free memory was 320.3 MB in the beginning and 320.3 MB in the end (delta: 2.6 kB). 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: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 565. Possible FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = ((void *)0) [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - UnprovableResult [Line: 643]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 643]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 644]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 644]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 648]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 648]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 649]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 649]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 630]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 630]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 631]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 631]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 633]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 634]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 634]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 636]: 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, 286 locations, 131 error locations. Started 1 CEGAR loops. OverallTime: 93032.0ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 24.1ms, AutomataDifference: 33045.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4441 SDtfs, 14966 SDslu, 9916 SDs, 0 SdLazy, 6236 SolverSat, 218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20363.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 737 SyntacticMatches, 18 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 21517.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=18, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 262.7ms AutomataMinimizationTime, 18 MinimizatonAttempts, 4304 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 267.3ms SsaConstructionTime, 901.0ms SatisfiabilityAnalysisTime, 19743.2ms InterpolantComputationTime, 450 NumberOfCodeBlocks, 450 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 850 ConstructedInterpolants, 10 QuantifiedInterpolants, 7678 SizeOfPredicates, 179 NumberOfNonLiveVariables, 1936 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 50 InterpolantComputations, 34 PerfectInterpolantSequences, 20/36 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 [2021-10-16 01:56:26,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5b4820-109f-4cba-b572-0911161be247/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...