./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/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 b03be66939377379d1133485be57e118e2bd7c88 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:45:16,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:45:16,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:45:16,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:45:16,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:45:16,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:45:16,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:45:16,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:45:16,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:45:16,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:45:16,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:45:16,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:45:16,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:45:16,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:45:16,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:45:16,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:45:16,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:45:16,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:45:16,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:45:16,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:45:16,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:45:16,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:45:16,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:45:16,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:45:16,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:45:16,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:45:16,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:45:16,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:45:16,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:45:16,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:45:16,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:45:16,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:45:16,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:45:16,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:45:16,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:45:16,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:45:16,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:45:16,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:45:16,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:45:16,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:45:16,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:45:16,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:45:16,496 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:45:16,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:45:16,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:45:16,497 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:45:16,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:45:16,497 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:45:16,497 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:45:16,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:45:16,498 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:45:16,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:45:16,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:45:16,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:45:16,499 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:45:16,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:45:16,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:45:16,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:45:16,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:45:16,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:45:16,500 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:45:16,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:45:16,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:45:16,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:45:16,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:45:16,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:45:16,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:45:16,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:45:16,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:45:16,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:45:16,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:45:16,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:45:16,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:45:16,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:45:16,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:45:16,504 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:45:16,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:45:16,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:45:16,504 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_cc899d31-b2b3-42e0-951c-c877761b62d2/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 -> b03be66939377379d1133485be57e118e2bd7c88 [2019-11-26 02:45:16,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:45:16,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:45:16,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:45:16,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:45:16,649 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:45:16,650 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-26 02:45:16,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/data/8dabd17ac/ed51fc6507274db99b12b3c6b7fc1a50/FLAG155ca5e74 [2019-11-26 02:45:17,141 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:45:17,142 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-11-26 02:45:17,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/data/8dabd17ac/ed51fc6507274db99b12b3c6b7fc1a50/FLAG155ca5e74 [2019-11-26 02:45:17,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/data/8dabd17ac/ed51fc6507274db99b12b3c6b7fc1a50 [2019-11-26 02:45:17,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:45:17,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:45:17,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:17,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:45:17,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:45:17,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cdf68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17, skipping insertion in model container [2019-11-26 02:45:17,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:45:17,220 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:45:17,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:17,561 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:45:17,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:17,670 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:45:17,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17 WrapperNode [2019-11-26 02:45:17,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:17,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:17,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:45:17,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:45:17,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:17,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:45:17,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:45:17,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:45:17,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... [2019-11-26 02:45:17,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:45:17,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:45:17,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:45:17,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:45:17,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/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 [2019-11-26 02:45:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:45:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:45:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:45:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:45:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:45:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-26 02:45:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:45:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:45:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:45:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:45:18,135 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:45:18,135 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:45:18,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:18 BoogieIcfgContainer [2019-11-26 02:45:18,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:45:18,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:45:18,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:45:18,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:45:18,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:45:17" (1/3) ... [2019-11-26 02:45:18,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7b8243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:18, skipping insertion in model container [2019-11-26 02:45:18,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:17" (2/3) ... [2019-11-26 02:45:18,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7b8243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:18, skipping insertion in model container [2019-11-26 02:45:18,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:18" (3/3) ... [2019-11-26 02:45:18,143 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2019-11-26 02:45:18,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:45:18,157 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-26 02:45:18,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-26 02:45:18,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:45:18,181 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:45:18,182 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:45:18,182 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:45:18,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:45:18,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:45:18,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:45:18,182 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:45:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-26 02:45:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:45:18,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:18,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:45:18,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-11-26 02:45:18,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:18,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1327720036] [2019-11-26 02:45:18,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:18,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:45:18,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:18,380 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-26 02:45:18,380 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-26 02:45:18,381 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:18,401 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:18,403 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:18,403 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-26 02:45:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:18,419 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:18,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1327720036] [2019-11-26 02:45:18,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:18,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:45:18,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401947938] [2019-11-26 02:45:18,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:45:18,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:45:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:45:18,449 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2019-11-26 02:45:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:18,566 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-26 02:45:18,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:45:18,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:45:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:18,576 INFO L225 Difference]: With dead ends: 26 [2019-11-26 02:45:18,576 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:45:18,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:45:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:45:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-26 02:45:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-26 02:45:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-26 02:45:18,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2019-11-26 02:45:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:18,604 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-26 02:45:18,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:45:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-26 02:45:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:45:18,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:18,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:45:18,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:18,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2019-11-26 02:45:18,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:18,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [968140935] [2019-11-26 02:45:18,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:18,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:45:18,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:18,924 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_26|]} [2019-11-26 02:45:18,934 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:18,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-26 02:45:18,936 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:18,955 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:18,963 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:18,969 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-26 02:45:18,970 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:18,990 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:18,991 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:18,991 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-26 02:45:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:19,010 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:19,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [968140935] [2019-11-26 02:45:19,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:19,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:45:19,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004491204] [2019-11-26 02:45:19,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:45:19,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:45:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:19,056 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2019-11-26 02:45:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:19,125 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-26 02:45:19,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:45:19,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-26 02:45:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:19,127 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:45:19,127 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:45:19,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:45:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:45:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:45:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-26 02:45:19,130 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2019-11-26 02:45:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:19,131 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-26 02:45:19,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:45:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-26 02:45:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:45:19,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:19,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:19,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:19,333 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1894559918, now seen corresponding path program 1 times [2019-11-26 02:45:19,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:19,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1441252775] [2019-11-26 02:45:19,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:19,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:19,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:19,480 INFO L377 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 [2019-11-26 02:45:19,480 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,486 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:19,486 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,486 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-26 02:45:19,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:19,518 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-26 02:45:19,518 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:19,530 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,530 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:11 [2019-11-26 02:45:19,548 INFO L377 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 15 treesize of output 7 [2019-11-26 02:45:19,549 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:19,553 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:19,553 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-26 02:45:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:19,567 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:19,593 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:19,596 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:19,597 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:19,597 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-26 02:45:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:19,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1441252775] [2019-11-26 02:45:19,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:19,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:45:19,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901608229] [2019-11-26 02:45:19,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:45:19,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:19,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:45:19,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:45:19,619 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-26 02:45:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:19,755 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-26 02:45:19,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:45:19,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:45:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:19,757 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:45:19,757 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:45:19,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:45:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:45:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:45:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:45:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-26 02:45:19,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-11-26 02:45:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:19,760 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-26 02:45:19,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:45:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-26 02:45:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:45:19,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:19,761 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:19,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:19,965 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1398184620, now seen corresponding path program 1 times [2019-11-26 02:45:19,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:19,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [510939135] [2019-11-26 02:45:19,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:20,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:45:20,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:20,093 INFO L377 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 [2019-11-26 02:45:20,094 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,114 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,115 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,115 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-11-26 02:45:20,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:20,154 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-26 02:45:20,154 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,173 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,173 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,174 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2019-11-26 02:45:20,187 INFO L377 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 15 treesize of output 7 [2019-11-26 02:45:20,187 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,194 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,195 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,195 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-26 02:45:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:20,209 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:20,242 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:20,246 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,246 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:20,246 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-26 02:45:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:20,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510939135] [2019-11-26 02:45:20,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:20,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-26 02:45:20,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869901750] [2019-11-26 02:45:20,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:45:20,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:20,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:45:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:45:20,271 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2019-11-26 02:45:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:20,478 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-26 02:45:20,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:45:20,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-11-26 02:45:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:20,479 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:45:20,479 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:45:20,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:45:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:45:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:45:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:45:20,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2019-11-26 02:45:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:20,482 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:45:20,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:45:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:45:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:45:20,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:20,484 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:20,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:20,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash -394050192, now seen corresponding path program 1 times [2019-11-26 02:45:20,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:20,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [26144069] [2019-11-26 02:45:20,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:20,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:45:20,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:20,794 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-26 02:45:20,795 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-26 02:45:20,795 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,802 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,802 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,803 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2019-11-26 02:45:20,825 INFO L377 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 [2019-11-26 02:45:20,826 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,843 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,844 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,844 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:22 [2019-11-26 02:45:20,873 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:20,875 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-11-26 02:45:20,875 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,882 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,882 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,882 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:22 [2019-11-26 02:45:20,894 INFO L377 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 [2019-11-26 02:45:20,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:20,904 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,905 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:20,905 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:15 [2019-11-26 02:45:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:20,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:20,990 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:20,996 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:20,996 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:20,997 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:23 [2019-11-26 02:45:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:21,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26144069] [2019-11-26 02:45:21,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:21,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2019-11-26 02:45:21,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930820470] [2019-11-26 02:45:21,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:45:21,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:45:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:45:21,026 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2019-11-26 02:45:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:21,136 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-26 02:45:21,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:45:21,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-26 02:45:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:21,137 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:45:21,138 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 02:45:21,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:45:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 02:45:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-26 02:45:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 02:45:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-26 02:45:21,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-11-26 02:45:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:21,140 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-26 02:45:21,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:45:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-26 02:45:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:45:21,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:21,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:21,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:21,342 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:45:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:21,342 INFO L82 PathProgramCache]: Analyzing trace with hash 669346007, now seen corresponding path program 1 times [2019-11-26 02:45:21,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:21,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [801967225] [2019-11-26 02:45:21,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:21,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 02:45:21,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:21,465 INFO L377 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 [2019-11-26 02:45:21,465 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:21,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,472 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-26 02:45:21,579 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2019-11-26 02:45:21,579 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:21,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:53 [2019-11-26 02:45:21,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:45:21,663 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2019-11-26 02:45:21,663 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,701 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:21,702 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,702 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:53 [2019-11-26 02:45:21,718 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-11-26 02:45:21,719 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,738 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:21,738 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:45:21,739 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-26 02:45:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:21,883 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:22,010 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:22,021 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:45:22,022 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:45:22,022 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:32 [2019-11-26 02:45:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:22,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [801967225] [2019-11-26 02:45:22,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:22,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2019-11-26 02:45:22,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953340410] [2019-11-26 02:45:22,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-26 02:45:22,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:22,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-26 02:45:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:45:22,128 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2019-11-26 02:45:22,664 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2019-11-26 02:45:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:22,796 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-11-26 02:45:22,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:45:22,796 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2019-11-26 02:45:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:22,797 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:45:22,797 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:45:22,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:45:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:45:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:45:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:45:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:45:22,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-26 02:45:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:22,798 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:45:22,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-26 02:45:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:45:22,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:45:22,999 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:23,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:45:23 BoogieIcfgContainer [2019-11-26 02:45:23,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:45:23,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:45:23,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:45:23,003 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:45:23,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:18" (3/4) ... [2019-11-26 02:45:23,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:45:23,014 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-26 02:45:23,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:45:23,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:45:23,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:45:23,053 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cc899d31-b2b3-42e0-951c-c877761b62d2/bin/utaipan/witness.graphml [2019-11-26 02:45:23,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:45:23,055 INFO L168 Benchmark]: Toolchain (without parser) took 5882.38 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -264.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:23,055 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:23,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:23,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:23,056 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:23,057 INFO L168 Benchmark]: RCFGBuilder took 396.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:23,057 INFO L168 Benchmark]: TraceAbstraction took 4865.30 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -109.6 MB). Peak memory consumption was 300.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:23,057 INFO L168 Benchmark]: Witness Printer took 50.79 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:23,059 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 497.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 396.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4865.30 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -109.6 MB). Peak memory consumption was 300.3 MB. Max. memory is 11.5 GB. * Witness Printer took 50.79 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 513]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 16 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 168 SDslu, 51 SDs, 0 SdLazy, 155 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 3 QuantifiedInterpolants, 11883 SizeOfPredicates, 22 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...