./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0539ac658883b1641a4574e23a99ec21471d0b6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0539ac658883b1641a4574e23a99ec21471d0b6a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:46:46,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:46:46,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:46:46,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:46:46,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:46:46,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:46:46,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:46:46,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:46:46,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:46:46,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:46:46,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:46:46,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:46:46,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:46:46,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:46:46,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:46:46,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:46:46,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:46:46,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:46:46,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:46:46,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:46:46,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:46:46,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:46:46,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:46:46,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:46:46,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:46:46,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:46:46,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:46:46,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:46:46,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:46:46,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:46:46,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:46:46,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:46:46,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:46:46,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:46:46,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:46:46,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:46:46,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:46:46,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:46:46,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:46:46,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:46:46,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:46:46,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 08:46:46,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:46:46,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:46:46,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:46:46,448 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:46:46,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:46:46,448 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:46:46,448 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:46:46,448 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:46:46,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:46:46,449 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:46:46,449 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:46:46,449 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:46:46,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:46:46,450 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:46:46,450 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:46:46,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 08:46:46,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 08:46:46,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:46:46,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:46:46,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 08:46:46,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 08:46:46,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:46:46,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:46:46,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:46:46,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:46:46,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:46:46,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:46:46,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:46:46,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:46:46,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:46:46,454 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:46:46,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:46:46,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:46:46,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:46:46,455 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-12-09 08:46:46,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:46:46,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:46:46,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:46:46,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:46:46,637 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:46:46,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-09 08:46:46,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/010c4a8cf/ca26070ea6974655906e13767781cbb5/FLAG5bec48952 [2020-12-09 08:46:47,084 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:46:47,084 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-09 08:46:47,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/010c4a8cf/ca26070ea6974655906e13767781cbb5/FLAG5bec48952 [2020-12-09 08:46:47,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/010c4a8cf/ca26070ea6974655906e13767781cbb5 [2020-12-09 08:46:47,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:46:47,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:46:47,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:47,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:46:47,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:46:47,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e41cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47, skipping insertion in model container [2020-12-09 08:46:47,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:46:47,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:46:47,354 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2020-12-09 08:46:47,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:47,364 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:46:47,391 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2020-12-09 08:46:47,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:47,427 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:46:47,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47 WrapperNode [2020-12-09 08:46:47,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:47,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:47,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:46:47,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:46:47,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:47,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:46:47,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:46:47,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:46:47,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... [2020-12-09 08:46:47,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:46:47,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:46:47,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:46:47,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:46:47,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:46:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 08:46:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 08:46:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:46:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 08:46:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:46:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 08:46:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:46:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:46:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:46:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:46:47,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:46:47,970 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-09 08:46:47,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:47 BoogieIcfgContainer [2020-12-09 08:46:47,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:46:47,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:46:47,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:46:47,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:46:47,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:46:47" (1/3) ... [2020-12-09 08:46:47,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573b0d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:47, skipping insertion in model container [2020-12-09 08:46:47,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:47" (2/3) ... [2020-12-09 08:46:47,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573b0d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:47, skipping insertion in model container [2020-12-09 08:46:47,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:47" (3/3) ... [2020-12-09 08:46:47,977 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-12-09 08:46:47,987 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:46:47,990 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-09 08:46:47,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-09 08:46:48,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:46:48,011 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 08:46:48,011 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:46:48,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:46:48,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:46:48,011 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:46:48,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:46:48,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:46:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-09 08:46:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:46:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:46:48,028 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,031 INFO L82 PathProgramCache]: Analyzing trace with hash 200361517, now seen corresponding path program 1 times [2020-12-09 08:46:48,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779243244] [2020-12-09 08:46:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:48,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779243244] [2020-12-09 08:46:48,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:48,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:46:48,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402168919] [2020-12-09 08:46:48,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:46:48,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:46:48,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:46:48,145 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2020-12-09 08:46:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:48,156 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-12-09 08:46:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:46:48,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 08:46:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:48,162 INFO L225 Difference]: With dead ends: 78 [2020-12-09 08:46:48,162 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 08:46:48,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:46:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 08:46:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-09 08:46:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 08:46:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-12-09 08:46:48,188 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 5 [2020-12-09 08:46:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:48,188 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-12-09 08:46:48,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:46:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-12-09 08:46:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:46:48,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:46:48,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:46:48,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash 200499069, now seen corresponding path program 1 times [2020-12-09 08:46:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007400932] [2020-12-09 08:46:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:48,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007400932] [2020-12-09 08:46:48,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:48,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:46:48,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115181644] [2020-12-09 08:46:48,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:46:48,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:48,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:46:48,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:46:48,236 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 4 states. [2020-12-09 08:46:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:48,364 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-12-09 08:46:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:46:48,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 08:46:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:48,365 INFO L225 Difference]: With dead ends: 92 [2020-12-09 08:46:48,366 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 08:46:48,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 08:46:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-12-09 08:46:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 08:46:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-12-09 08:46:48,373 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 5 [2020-12-09 08:46:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:48,373 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-12-09 08:46:48,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:46:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-12-09 08:46:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:46:48,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:46:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:46:48,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash 200499070, now seen corresponding path program 1 times [2020-12-09 08:46:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192774329] [2020-12-09 08:46:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:48,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192774329] [2020-12-09 08:46:48,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:48,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:46:48,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818294840] [2020-12-09 08:46:48,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:46:48,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:46:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:46:48,420 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 4 states. [2020-12-09 08:46:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:48,545 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-12-09 08:46:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:46:48,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 08:46:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:48,547 INFO L225 Difference]: With dead ends: 102 [2020-12-09 08:46:48,547 INFO L226 Difference]: Without dead ends: 102 [2020-12-09 08:46:48,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-09 08:46:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-12-09 08:46:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-09 08:46:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-12-09 08:46:48,553 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 5 [2020-12-09 08:46:48,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:48,553 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-12-09 08:46:48,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:46:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-12-09 08:46:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:46:48,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:48,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 08:46:48,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash -901452159, now seen corresponding path program 1 times [2020-12-09 08:46:48,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651874857] [2020-12-09 08:46:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:48,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651874857] [2020-12-09 08:46:48,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:48,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:46:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811111209] [2020-12-09 08:46:48,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:46:48,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:46:48,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:48,608 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 5 states. [2020-12-09 08:46:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:48,730 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-12-09 08:46:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:46:48,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 08:46:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:48,732 INFO L225 Difference]: With dead ends: 122 [2020-12-09 08:46:48,732 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 08:46:48,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:46:48,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 08:46:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2020-12-09 08:46:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 08:46:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-12-09 08:46:48,740 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 11 [2020-12-09 08:46:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:48,740 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-12-09 08:46:48,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:46:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-12-09 08:46:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:46:48,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:48,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 08:46:48,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash -901452158, now seen corresponding path program 1 times [2020-12-09 08:46:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997165251] [2020-12-09 08:46:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:48,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997165251] [2020-12-09 08:46:48,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:48,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:46:48,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508254801] [2020-12-09 08:46:48,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:46:48,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:46:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:48,799 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 5 states. [2020-12-09 08:46:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:48,945 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2020-12-09 08:46:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:46:48,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 08:46:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:48,946 INFO L225 Difference]: With dead ends: 114 [2020-12-09 08:46:48,946 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 08:46:48,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:46:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 08:46:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 65. [2020-12-09 08:46:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 08:46:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-12-09 08:46:48,950 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2020-12-09 08:46:48,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:48,950 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-12-09 08:46:48,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:46:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-12-09 08:46:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:46:48,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:48,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:48,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 08:46:48,951 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:48,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1082683528, now seen corresponding path program 1 times [2020-12-09 08:46:48,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:48,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398601525] [2020-12-09 08:46:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:49,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398601525] [2020-12-09 08:46:49,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:49,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:46:49,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869582538] [2020-12-09 08:46:49,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:49,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:49,001 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 6 states. [2020-12-09 08:46:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:49,118 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-09 08:46:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:46:49,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 08:46:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:49,119 INFO L225 Difference]: With dead ends: 114 [2020-12-09 08:46:49,119 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 08:46:49,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:46:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 08:46:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2020-12-09 08:46:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 08:46:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-12-09 08:46:49,124 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2020-12-09 08:46:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:49,125 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-12-09 08:46:49,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-12-09 08:46:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:46:49,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:49,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:49,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 08:46:49,126 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:49,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1072732136, now seen corresponding path program 1 times [2020-12-09 08:46:49,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:49,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69314438] [2020-12-09 08:46:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:49,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69314438] [2020-12-09 08:46:49,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:49,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:46:49,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036996458] [2020-12-09 08:46:49,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:49,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:49,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:49,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:49,174 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 6 states. [2020-12-09 08:46:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:49,270 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-12-09 08:46:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:46:49,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 08:46:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:49,271 INFO L225 Difference]: With dead ends: 113 [2020-12-09 08:46:49,271 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 08:46:49,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:46:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 08:46:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 75. [2020-12-09 08:46:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 08:46:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-12-09 08:46:49,276 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 14 [2020-12-09 08:46:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:49,276 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-12-09 08:46:49,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-12-09 08:46:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:46:49,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:49,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:49,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 08:46:49,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:49,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1105150021, now seen corresponding path program 1 times [2020-12-09 08:46:49,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:49,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367793069] [2020-12-09 08:46:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:46:49,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:46:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:46:49,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:46:49,320 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 08:46:49,321 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:46:49,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 08:46:49,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:46:49 BoogieIcfgContainer [2020-12-09 08:46:49,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:46:49,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:46:49,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:46:49,340 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:46:49,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:47" (3/4) ... [2020-12-09 08:46:49,342 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 08:46:49,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:46:49,344 INFO L168 Benchmark]: Toolchain (without parser) took 2231.00 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 85.6 MB in the beginning and 64.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,344 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 111.1 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:46:49,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.12 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 75.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 111.1 MB. Free memory was 75.2 MB in the beginning and 72.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,345 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 111.1 MB. Free memory was 72.9 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,345 INFO L168 Benchmark]: RCFGBuilder took 482.05 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 73.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,346 INFO L168 Benchmark]: TraceAbstraction took 1366.67 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 72.8 MB in the beginning and 64.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:49,346 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 144.7 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:46:49,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 111.1 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.12 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 75.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 111.1 MB. Free memory was 75.2 MB in the beginning and 72.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 111.1 MB. Free memory was 72.9 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 482.05 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 73.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1366.67 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 72.8 MB in the beginning and 64.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.67 ms. Allocated memory is still 144.7 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 527 SDslu, 351 SDs, 0 SdLazy, 803 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 194 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 8/8 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:46:50,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:46:50,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:46:50,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:46:50,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:46:50,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:46:50,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:46:50,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:46:50,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:46:50,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:46:50,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:46:50,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:46:50,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:46:50,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:46:50,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:46:50,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:46:50,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:46:50,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:46:50,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:46:50,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:46:50,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:46:50,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:46:50,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:46:50,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:46:50,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:46:50,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:46:50,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:46:50,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:46:50,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:46:50,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:46:50,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:46:50,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:46:50,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:46:50,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:46:50,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:46:50,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:46:50,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:46:50,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:46:50,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:46:50,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:46:50,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:46:50,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 08:46:50,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:46:50,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:46:50,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:46:50,974 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:46:50,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:46:50,974 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:46:50,974 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:46:50,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:46:50,975 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:46:50,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 08:46:50,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 08:46:50,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:46:50,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:46:50,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 08:46:50,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:46:50,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:46:50,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:46:50,977 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 08:46:50,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 08:46:50,977 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 08:46:50,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:46:50,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:46:50,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 08:46:50,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 08:46:50,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:46:50,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:46:50,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:46:50,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 08:46:50,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:46:50,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:46:50,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:46:50,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:46:50,980 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 08:46:50,980 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 08:46:50,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:46:50,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:46:50,981 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-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-12-09 08:46:51,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:46:51,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:46:51,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:46:51,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:46:51,242 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:46:51,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-09 08:46:51,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/160a0b535/874d2ced110141e89f1d6211d370f6f6/FLAGd4474340c [2020-12-09 08:46:51,713 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:46:51,714 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-12-09 08:46:51,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/160a0b535/874d2ced110141e89f1d6211d370f6f6/FLAGd4474340c [2020-12-09 08:46:51,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/data/160a0b535/874d2ced110141e89f1d6211d370f6f6 [2020-12-09 08:46:51,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:46:51,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:46:51,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:51,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:46:51,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:46:51,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:51" (1/1) ... [2020-12-09 08:46:51,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff9bac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:51, skipping insertion in model container [2020-12-09 08:46:51,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:51" (1/1) ... [2020-12-09 08:46:51,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:46:51,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:46:52,032 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2020-12-09 08:46:52,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:52,050 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:46:52,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2020-12-09 08:46:52,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:52,154 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:46:52,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52 WrapperNode [2020-12-09 08:46:52,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:52,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:52,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:46:52,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:46:52,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:52,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:46:52,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:46:52,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:46:52,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... [2020-12-09 08:46:52,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:46:52,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:46:52,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:46:52,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:46:52,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:46:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 08:46:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 08:46:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:46:52,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:46:52,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:46:52,710 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-09 08:46:52,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:52 BoogieIcfgContainer [2020-12-09 08:46:52,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:46:52,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:46:52,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:46:52,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:46:52,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:46:51" (1/3) ... [2020-12-09 08:46:52,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6358a98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:52, skipping insertion in model container [2020-12-09 08:46:52,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:52" (2/3) ... [2020-12-09 08:46:52,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6358a98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:52, skipping insertion in model container [2020-12-09 08:46:52,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:52" (3/3) ... [2020-12-09 08:46:52,719 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-12-09 08:46:52,731 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:46:52,734 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-09 08:46:52,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-09 08:46:52,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:46:52,762 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 08:46:52,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:46:52,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:46:52,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:46:52,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:46:52,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:46:52,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:46:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-12-09 08:46:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:46:52,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:52,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:46:52,780 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 889599271, now seen corresponding path program 1 times [2020-12-09 08:46:52,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:52,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81466008] [2020-12-09 08:46:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:46:52,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:52,914 INFO L382 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 [2020-12-09 08:46:52,915 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:52,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:52,920 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:52,920 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 08:46:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:52,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:52,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81466008] [2020-12-09 08:46:52,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:52,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:46:52,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482921039] [2020-12-09 08:46:52,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:46:52,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:46:52,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:46:52,949 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-12-09 08:46:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:53,219 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-12-09 08:46:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:46:53,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 08:46:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:53,227 INFO L225 Difference]: With dead ends: 104 [2020-12-09 08:46:53,227 INFO L226 Difference]: Without dead ends: 99 [2020-12-09 08:46:53,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-09 08:46:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2020-12-09 08:46:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 08:46:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-12-09 08:46:53,255 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 6 [2020-12-09 08:46:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:53,255 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-12-09 08:46:53,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:46:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-12-09 08:46:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:46:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:53,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:46:53,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 08:46:53,458 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:53,461 INFO L82 PathProgramCache]: Analyzing trace with hash 889599272, now seen corresponding path program 1 times [2020-12-09 08:46:53,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:53,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129033575] [2020-12-09 08:46:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:53,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 08:46:53,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:53,623 INFO L382 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 [2020-12-09 08:46:53,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:53,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:53,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:53,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 08:46:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:53,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:53,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129033575] [2020-12-09 08:46:53,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:53,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:46:53,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098978864] [2020-12-09 08:46:53,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:46:53,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:53,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:46:53,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:46:53,651 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 4 states. [2020-12-09 08:46:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:53,934 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-12-09 08:46:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:46:53,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 08:46:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:53,936 INFO L225 Difference]: With dead ends: 116 [2020-12-09 08:46:53,936 INFO L226 Difference]: Without dead ends: 116 [2020-12-09 08:46:53,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:46:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-09 08:46:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2020-12-09 08:46:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-09 08:46:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-12-09 08:46:53,944 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 6 [2020-12-09 08:46:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:53,944 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-12-09 08:46:53,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:46:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-12-09 08:46:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:46:53,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:53,945 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:54,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 08:46:54,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash 903973752, now seen corresponding path program 1 times [2020-12-09 08:46:54,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:54,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637219615] [2020-12-09 08:46:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:46:54,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:54,278 INFO L382 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 [2020-12-09 08:46:54,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:54,280 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 08:46:54,295 INFO L382 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 [2020-12-09 08:46:54,296 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,303 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:54,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 08:46:54,318 INFO L382 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 23 treesize of output 11 [2020-12-09 08:46:54,319 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,321 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:54,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:54,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-12-09 08:46:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:54,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:54,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637219615] [2020-12-09 08:46:54,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:54,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:46:54,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943803732] [2020-12-09 08:46:54,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:54,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:54,338 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 6 states. [2020-12-09 08:46:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:54,826 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2020-12-09 08:46:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:46:54,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 08:46:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:54,827 INFO L225 Difference]: With dead ends: 142 [2020-12-09 08:46:54,827 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 08:46:54,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 08:46:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 08:46:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2020-12-09 08:46:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-09 08:46:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2020-12-09 08:46:54,834 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 13 [2020-12-09 08:46:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:54,834 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2020-12-09 08:46:54,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2020-12-09 08:46:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:46:54,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:54,835 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:55,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 08:46:55,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash 903973753, now seen corresponding path program 1 times [2020-12-09 08:46:55,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:55,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465297588] [2020-12-09 08:46:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:55,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 08:46:55,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:55,155 INFO L382 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 [2020-12-09 08:46:55,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:55,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 08:46:55,178 INFO L382 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 [2020-12-09 08:46:55,179 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:55,192 INFO L382 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 [2020-12-09 08:46:55,193 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:55,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,202 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:21 [2020-12-09 08:46:55,225 INFO L382 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 [2020-12-09 08:46:55,226 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,234 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:55,236 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-09 08:46:55,237 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:55,242 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:55,242 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-12-09 08:46:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:55,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:55,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465297588] [2020-12-09 08:46:55,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:55,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:46:55,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910333595] [2020-12-09 08:46:55,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:55,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:55,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:55,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:55,267 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 6 states. [2020-12-09 08:46:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:55,889 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-12-09 08:46:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:46:55,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 08:46:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:55,891 INFO L225 Difference]: With dead ends: 145 [2020-12-09 08:46:55,891 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 08:46:55,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 08:46:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 08:46:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2020-12-09 08:46:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 08:46:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-09 08:46:55,896 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 13 [2020-12-09 08:46:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:55,896 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-09 08:46:55,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-09 08:46:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:46:55,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:55,897 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:56,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 08:46:56,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288014, now seen corresponding path program 1 times [2020-12-09 08:46:56,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:56,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355762839] [2020-12-09 08:46:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:56,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:46:56,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:56,170 INFO L382 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 [2020-12-09 08:46:56,171 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,172 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 08:46:56,181 INFO L382 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 [2020-12-09 08:46:56,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,188 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 08:46:56,201 INFO L382 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 23 treesize of output 11 [2020-12-09 08:46:56,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,204 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-12-09 08:46:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:56,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:56,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355762839] [2020-12-09 08:46:56,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:56,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:46:56,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141708253] [2020-12-09 08:46:56,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:56,219 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 6 states. [2020-12-09 08:46:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:56,612 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2020-12-09 08:46:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:46:56,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 08:46:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:56,613 INFO L225 Difference]: With dead ends: 134 [2020-12-09 08:46:56,613 INFO L226 Difference]: Without dead ends: 134 [2020-12-09 08:46:56,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 08:46:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-09 08:46:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 87. [2020-12-09 08:46:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 08:46:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-09 08:46:56,620 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 14 [2020-12-09 08:46:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:56,620 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-09 08:46:56,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-09 08:46:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:46:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:56,621 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:56,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 08:46:56,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288015, now seen corresponding path program 1 times [2020-12-09 08:46:56,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:56,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159936134] [2020-12-09 08:46:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 08:46:56,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:56,892 INFO L382 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 [2020-12-09 08:46:56,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,897 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 08:46:56,913 INFO L382 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 [2020-12-09 08:46:56,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,926 INFO L382 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 [2020-12-09 08:46:56,927 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,936 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:21 [2020-12-09 08:46:56,958 INFO L382 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 [2020-12-09 08:46:56,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,969 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-09 08:46:56,970 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:56,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:56,976 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-12-09 08:46:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:57,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:57,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159936134] [2020-12-09 08:46:57,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:57,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:46:57,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191502422] [2020-12-09 08:46:57,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:46:57,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:57,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:46:57,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:46:57,003 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 6 states. [2020-12-09 08:46:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:57,521 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-09 08:46:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:46:57,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 08:46:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:57,522 INFO L225 Difference]: With dead ends: 131 [2020-12-09 08:46:57,522 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 08:46:57,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 08:46:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 08:46:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 74. [2020-12-09 08:46:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 08:46:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-09 08:46:57,526 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2020-12-09 08:46:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:57,527 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-09 08:46:57,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:46:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-09 08:46:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:46:57,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:57,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:57,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 08:46:57,728 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash 638736065, now seen corresponding path program 1 times [2020-12-09 08:46:57,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:57,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658073245] [2020-12-09 08:46:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:57,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 08:46:57,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:57,827 INFO L382 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 [2020-12-09 08:46:57,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:57,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-09 08:46:57,865 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-09 08:46:57,865 INFO L382 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 29 treesize of output 13 [2020-12-09 08:46:57,867 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:57,870 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:7 [2020-12-09 08:46:57,891 INFO L382 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 17 treesize of output 9 [2020-12-09 08:46:57,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:46:57,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:46:57,893 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-12-09 08:46:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:57,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:46:57,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658073245] [2020-12-09 08:46:57,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:57,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 08:46:57,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435117239] [2020-12-09 08:46:57,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:46:57,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:46:57,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:46:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:46:57,902 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2020-12-09 08:46:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:58,281 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2020-12-09 08:46:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:46:58,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-12-09 08:46:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:58,282 INFO L225 Difference]: With dead ends: 162 [2020-12-09 08:46:58,282 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 08:46:58,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:46:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 08:46:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 81. [2020-12-09 08:46:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 08:46:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-12-09 08:46:58,286 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 14 [2020-12-09 08:46:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:58,286 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-12-09 08:46:58,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:46:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-12-09 08:46:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 08:46:58,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:58,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:46:58,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 08:46:58,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:46:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash -402595901, now seen corresponding path program 1 times [2020-12-09 08:46:58,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:46:58,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351561266] [2020-12-09 08:46:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edbe8747-c528-4e0b-8476-53cb5b02c75d/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 08:46:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:46:58,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:46:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:46:58,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:46:58,657 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 08:46:58,657 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:46:58,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 08:46:58,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:46:58 BoogieIcfgContainer [2020-12-09 08:46:58,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:46:58,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:46:58,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:46:58,912 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:46:58,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:52" (3/4) ... [2020-12-09 08:46:58,914 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 08:46:58,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:46:58,915 INFO L168 Benchmark]: Toolchain (without parser) took 7178.94 ms. Allocated memory was 54.5 MB in the beginning and 92.3 MB in the end (delta: 37.7 MB). Free memory was 31.4 MB in the beginning and 43.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,916 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:46:58,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.61 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 46.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.13 ms. Allocated memory is still 75.5 MB. Free memory was 46.2 MB in the beginning and 43.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,917 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 42.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,917 INFO L168 Benchmark]: RCFGBuilder took 479.67 ms. Allocated memory is still 75.5 MB. Free memory was 42.0 MB in the beginning and 46.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,918 INFO L168 Benchmark]: TraceAbstraction took 6197.46 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.7 MB in the beginning and 43.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:46:58,918 INFO L168 Benchmark]: Witness Printer took 3.14 ms. Allocated memory is still 92.3 MB. Free memory was 43.5 MB in the beginning and 43.2 MB in the end (delta: 297.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:46:58,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.61 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 46.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.13 ms. Allocated memory is still 75.5 MB. Free memory was 46.2 MB in the beginning and 43.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 42.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 479.67 ms. Allocated memory is still 75.5 MB. Free memory was 42.0 MB in the beginning and 46.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6197.46 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.7 MB in the beginning and 43.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.14 ms. Allocated memory is still 92.3 MB. Free memory was 43.5 MB in the beginning and 43.2 MB in the end (delta: 297.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 398 SDtfs, 731 SDslu, 720 SDs, 0 SdLazy, 1498 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 319 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 4142 SizeOfPredicates, 39 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 9/9 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 Received shutdown request...