./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/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 c8f17cf5334c3a5b079beafc57a2e2bffaea721f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:07:22,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:07:22,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:07:22,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:07:22,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:07:22,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:07:22,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:07:22,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:07:22,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:07:22,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:07:22,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:07:22,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:07:22,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:07:22,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:07:22,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:07:22,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:07:22,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:07:22,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:07:22,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:07:22,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:07:22,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:07:22,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:07:22,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:07:22,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:07:22,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:07:22,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:07:22,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:07:22,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:07:22,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:07:22,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:07:22,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:07:22,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:07:22,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:07:22,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:07:22,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:07:22,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:07:22,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:07:22,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:07:22,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:07:22,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:07:22,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:07:22,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 21:07:22,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:07:22,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:07:22,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:07:22,505 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:07:22,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:07:22,505 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:07:22,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:07:22,505 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:07:22,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:07:22,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:07:22,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:07:22,506 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:07:22,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:07:22,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:07:22,506 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:07:22,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 21:07:22,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 21:07:22,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:07:22,507 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:07:22,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 21:07:22,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:07:22,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:07:22,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:07:22,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:07:22,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:07:22,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:07:22,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:07:22,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6c0a0276-90e8-4852-85c1-036c984fd0a0/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 -> c8f17cf5334c3a5b079beafc57a2e2bffaea721f [2019-12-07 21:07:22,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:07:22,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:07:22,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:07:22,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:07:22,622 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:07:22,623 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2019-12-07 21:07:22,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/data/6c8ed566d/16320404c85c403fae3e7bed47a7a2c6/FLAG5e57e1fd6 [2019-12-07 21:07:23,041 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:07:23,042 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2019-12-07 21:07:23,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/data/6c8ed566d/16320404c85c403fae3e7bed47a7a2c6/FLAG5e57e1fd6 [2019-12-07 21:07:23,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/data/6c8ed566d/16320404c85c403fae3e7bed47a7a2c6 [2019-12-07 21:07:23,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:07:23,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:07:23,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:07:23,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:07:23,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:07:23,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161812df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23, skipping insertion in model container [2019-12-07 21:07:23,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:07:23,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:07:23,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:07:23,592 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:07:23,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:07:23,654 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:07:23,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23 WrapperNode [2019-12-07 21:07:23,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:07:23,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:07:23,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:07:23,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:07:23,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:07:23,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:07:23,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:07:23,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:07:23,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... [2019-12-07 21:07:23,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:07:23,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:07:23,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:07:23,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:07:23,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/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 [2019-12-07 21:07:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:07:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:07:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:07:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:07:23,898 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:07:23,898 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 21:07:23,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:07:23 BoogieIcfgContainer [2019-12-07 21:07:23,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:07:23,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:07:23,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:07:23,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:07:23,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:07:23" (1/3) ... [2019-12-07 21:07:23,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3372b4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:07:23, skipping insertion in model container [2019-12-07 21:07:23,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:07:23" (2/3) ... [2019-12-07 21:07:23,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3372b4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:07:23, skipping insertion in model container [2019-12-07 21:07:23,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:07:23" (3/3) ... [2019-12-07 21:07:23,904 INFO L109 eAbstractionObserver]: Analyzing ICFG getNumbers3.c [2019-12-07 21:07:23,910 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:07:23,914 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-12-07 21:07:23,921 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 21:07:23,933 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:07:23,933 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 21:07:23,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:07:23,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:07:23,933 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:07:23,933 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:07:23,933 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:07:23,933 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:07:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 21:07:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:07:23,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:23,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:07:23,948 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash 59760, now seen corresponding path program 1 times [2019-12-07 21:07:23,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:23,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744541432] [2019-12-07 21:07:23,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744541432] [2019-12-07 21:07:24,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:24,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:07:24,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494549418] [2019-12-07 21:07:24,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:07:24,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:07:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,062 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 21:07:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,083 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 21:07:24,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:07:24,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 21:07:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,090 INFO L225 Difference]: With dead ends: 15 [2019-12-07 21:07:24,090 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 21:07:24,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 21:07:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-12-07 21:07:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 21:07:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 21:07:24,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2019-12-07 21:07:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,111 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 21:07:24,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:07:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 21:07:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:07:24,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:07:24,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash 58943, now seen corresponding path program 1 times [2019-12-07 21:07:24,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:24,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515542327] [2019-12-07 21:07:24,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515542327] [2019-12-07 21:07:24,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:24,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:07:24,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258571411] [2019-12-07 21:07:24,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:07:24,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:07:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,133 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-12-07 21:07:24,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,143 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-12-07 21:07:24,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:07:24,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 21:07:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,144 INFO L225 Difference]: With dead ends: 10 [2019-12-07 21:07:24,144 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 21:07:24,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 21:07:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 21:07:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 21:07:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-12-07 21:07:24,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2019-12-07 21:07:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,146 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-12-07 21:07:24,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:07:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-12-07 21:07:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:07:24,147 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,147 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:07:24,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:24,147 INFO L82 PathProgramCache]: Analyzing trace with hash 58944, now seen corresponding path program 1 times [2019-12-07 21:07:24,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:24,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599560723] [2019-12-07 21:07:24,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599560723] [2019-12-07 21:07:24,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:24,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:07:24,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470954946] [2019-12-07 21:07:24,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:07:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:07:24,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,173 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2019-12-07 21:07:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,185 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-12-07 21:07:24,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:07:24,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 21:07:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,187 INFO L225 Difference]: With dead ends: 11 [2019-12-07 21:07:24,187 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 21:07:24,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 21:07:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 21:07:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 21:07:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 21:07:24,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2019-12-07 21:07:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,190 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 21:07:24,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:07:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 21:07:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:07:24,190 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:07:24,190 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:24,191 INFO L82 PathProgramCache]: Analyzing trace with hash 56663621, now seen corresponding path program 1 times [2019-12-07 21:07:24,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:24,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057581111] [2019-12-07 21:07:24,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057581111] [2019-12-07 21:07:24,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:24,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:07:24,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357299112] [2019-12-07 21:07:24,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:07:24,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:07:24,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:07:24,218 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-12-07 21:07:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,238 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-12-07 21:07:24,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:07:24,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 21:07:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,239 INFO L225 Difference]: With dead ends: 10 [2019-12-07 21:07:24,239 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 21:07:24,239 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:07:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 21:07:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 21:07:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 21:07:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-12-07 21:07:24,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2019-12-07 21:07:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,241 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-12-07 21:07:24,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:07:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-12-07 21:07:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:07:24,241 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:07:24,242 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:24,242 INFO L82 PathProgramCache]: Analyzing trace with hash 56663622, now seen corresponding path program 1 times [2019-12-07 21:07:24,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:24,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759307918] [2019-12-07 21:07:24,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 21:07:24,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759307918] [2019-12-07 21:07:24,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:24,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:07:24,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763949139] [2019-12-07 21:07:24,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:07:24,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:07:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:07:24,275 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2019-12-07 21:07:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,292 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-12-07 21:07:24,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:07:24,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 21:07:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,293 INFO L225 Difference]: With dead ends: 9 [2019-12-07 21:07:24,293 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 21:07:24,293 INFO L630 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 [2019-12-07 21:07:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 21:07:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 21:07:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 21:07:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 21:07:24,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-12-07 21:07:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,295 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 21:07:24,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:07:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 21:07:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:07:24,295 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,295 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-12-07 21:07:24,295 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash 56662805, now seen corresponding path program 1 times [2019-12-07 21:07:24,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:24,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98280612] [2019-12-07 21:07:24,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98280612] [2019-12-07 21:07:24,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224007110] [2019-12-07 21:07:24,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:07:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:24,351 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 21:07:24,355 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:07:24,391 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 [2019-12-07 21:07:24,392 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 21:07:24,397 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 21:07:24,397 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 21:07:24,397 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 21:07:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,404 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:07:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:24,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680037117] [2019-12-07 21:07:24,445 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2019-12-07 21:07:24,445 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:07:24,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:07:24,453 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:07:24,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:07:24,656 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:07:24,764 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:07:24,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 21:07:24,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2019-12-07 21:07:24,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958064731] [2019-12-07 21:07:24,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:07:24,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:24,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:07:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:07:24,765 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-12-07 21:07:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:24,814 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-12-07 21:07:24,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:07:24,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-12-07 21:07:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:24,815 INFO L225 Difference]: With dead ends: 21 [2019-12-07 21:07:24,815 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 21:07:24,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:07:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 21:07:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2019-12-07 21:07:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 21:07:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 21:07:24,818 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-12-07 21:07:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:24,818 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 21:07:24,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:07:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 21:07:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:07:24,818 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:24,818 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-12-07 21:07:25,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:07:25,019 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash 120048280, now seen corresponding path program 1 times [2019-12-07 21:07:25,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:25,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663029068] [2019-12-07 21:07:25,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 21:07:25,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663029068] [2019-12-07 21:07:25,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:07:25,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:07:25,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653359268] [2019-12-07 21:07:25,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:07:25,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:07:25,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:25,037 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-12-07 21:07:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:25,041 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 21:07:25,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:07:25,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 21:07:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:25,042 INFO L225 Difference]: With dead ends: 14 [2019-12-07 21:07:25,042 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 21:07:25,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:07:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 21:07:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 21:07:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 21:07:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 21:07:25,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-12-07 21:07:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:25,045 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 21:07:25,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:07:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 21:07:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 21:07:25,046 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:07:25,046 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2019-12-07 21:07:25,046 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:07:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:07:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205868, now seen corresponding path program 2 times [2019-12-07 21:07:25,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:07:25,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136303852] [2019-12-07 21:07:25,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:07:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:07:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:07:25,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136303852] [2019-12-07 21:07:25,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474462299] [2019-12-07 21:07:25,124 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:07:25,144 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 21:07:25,145 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:07:25,145 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 21:07:25,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:07:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 21:07:25,205 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:07:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 21:07:25,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:07:25,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 11 [2019-12-07 21:07:25,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705522136] [2019-12-07 21:07:25,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:07:25,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:07:25,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:07:25,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:07:25,255 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-12-07 21:07:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:07:25,264 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-12-07 21:07:25,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:07:25,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 21:07:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:07:25,265 INFO L225 Difference]: With dead ends: 11 [2019-12-07 21:07:25,265 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 21:07:25,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:07:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 21:07:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 21:07:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 21:07:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 21:07:25,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 21:07:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:07:25,266 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 21:07:25,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:07:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 21:07:25,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 21:07:25,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:07:25,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:07:25 BoogieIcfgContainer [2019-12-07 21:07:25,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:07:25,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:07:25,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:07:25,477 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:07:25,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:07:23" (3/4) ... [2019-12-07 21:07:25,484 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 21:07:25,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 21:07:25,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 21:07:25,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 21:07:25,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c0a0276-90e8-4852-85c1-036c984fd0a0/bin/utaipan/witness.graphml [2019-12-07 21:07:25,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:07:25,583 INFO L168 Benchmark]: Toolchain (without parser) took 2133.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.4 MB in the beginning and 881.4 MB in the end (delta: 61.0 MB). Peak memory consumption was 151.2 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,584 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:07:25,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,586 INFO L168 Benchmark]: Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,587 INFO L168 Benchmark]: RCFGBuilder took 196.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,588 INFO L168 Benchmark]: TraceAbstraction took 1575.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 881.4 MB in the end (delta: 180.7 MB). Peak memory consumption was 180.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:07:25,589 INFO L168 Benchmark]: Witness Printer took 104.27 ms. Allocated memory is still 1.1 GB. Free memory is still 881.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:07:25,594 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 196.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1575.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 881.4 MB in the end (delta: 180.7 MB). Peak memory consumption was 180.7 MB. Max. memory is 11.5 GB. * Witness Printer took 104.27 ms. Allocated memory is still 1.1 GB. Free memory is still 881.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 5 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 36 SDslu, 14 SDs, 0 SdLazy, 73 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=6, 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, 8 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 5493 SizeOfPredicates, 1 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 38/72 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...