./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/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 0.2.0-a4ecdab [2020-11-22 12:59:03,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:03,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:03,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:03,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:03,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:03,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:03,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:03,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:03,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:03,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:03,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:03,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:03,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:03,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:03,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:03,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:03,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:03,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:03,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:03,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:03,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:03,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:03,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:03,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:03,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:03,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:03,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:03,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:03,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:03,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:03,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:03,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:03,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:03,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:03,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:03,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:03,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:03,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:03,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:03,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:03,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 12:59:03,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:03,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:03,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:03,637 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:03,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:03,637 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:03,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:03,638 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:03,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:03,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:03,639 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:03,640 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:03,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:03,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:03,641 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:03,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:59:03,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:59:03,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:03,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:03,643 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:59:03,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:03,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:03,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:03,645 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:59:03,645 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:59:03,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:59:03,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:03,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:03,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:03,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:03,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:03,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:03,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:03,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:03,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:03,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:03,649 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:03,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:03,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:03,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:03,650 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f17cf5334c3a5b079beafc57a2e2bffaea721f [2020-11-22 12:59:03,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:03,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:03,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:03,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:03,905 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:03,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2020-11-22 12:59:03,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/data/1a4fcdf34/cc2795e8138d450e856e2391614bbcbe/FLAG14d189440 [2020-11-22 12:59:04,599 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:04,600 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2020-11-22 12:59:04,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/data/1a4fcdf34/cc2795e8138d450e856e2391614bbcbe/FLAG14d189440 [2020-11-22 12:59:04,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/data/1a4fcdf34/cc2795e8138d450e856e2391614bbcbe [2020-11-22 12:59:04,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:04,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:04,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:04,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:04,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:04,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:04" (1/1) ... [2020-11-22 12:59:04,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2d9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:04, skipping insertion in model container [2020-11-22 12:59:04,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:04" (1/1) ... [2020-11-22 12:59:05,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:05,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:05,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:05,200 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:05,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:05,247 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:05,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05 WrapperNode [2020-11-22 12:59:05,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:05,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:05,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:05,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:05,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:05,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:05,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:05,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:05,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... [2020-11-22 12:59:05,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:05,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:05,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:05,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:05,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:59:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:05,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:05,790 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 12:59:05,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:05 BoogieIcfgContainer [2020-11-22 12:59:05,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:05,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:05,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:05,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:05,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:04" (1/3) ... [2020-11-22 12:59:05,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8c0624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:05, skipping insertion in model container [2020-11-22 12:59:05,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:05" (2/3) ... [2020-11-22 12:59:05,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8c0624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:05, skipping insertion in model container [2020-11-22 12:59:05,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:05" (3/3) ... [2020-11-22 12:59:05,801 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers3.c [2020-11-22 12:59:05,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:05,816 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-22 12:59:05,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 12:59:05,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:05,849 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 12:59:05,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:05,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:05,850 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:05,850 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:05,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:05,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:59:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:59:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:05,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:59:05,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash 59760, now seen corresponding path program 1 times [2020-11-22 12:59:05,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:05,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527353607] [2020-11-22 12:59:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527353607] [2020-11-22 12:59:06,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:06,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:06,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153999095] [2020-11-22 12:59:06,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:06,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:06,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:06,049 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-22 12:59:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:06,097 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-22 12:59:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:06,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:59:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:06,107 INFO L225 Difference]: With dead ends: 15 [2020-11-22 12:59:06,107 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 12:59:06,108 INFO L677 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 [2020-11-22 12:59:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 12:59:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2020-11-22 12:59:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 12:59:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-22 12:59:06,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2020-11-22 12:59:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:06,147 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-22 12:59:06,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-22 12:59:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:59:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:06,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:59:06,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:06,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:06,153 INFO L82 PathProgramCache]: Analyzing trace with hash 58943, now seen corresponding path program 1 times [2020-11-22 12:59:06,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:06,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618820107] [2020-11-22 12:59:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618820107] [2020-11-22 12:59:06,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:06,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138112097] [2020-11-22 12:59:06,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:06,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:06,199 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-11-22 12:59:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:06,218 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-22 12:59:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:06,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:59:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:06,219 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:59:06,219 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:59:06,220 INFO L677 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 [2020-11-22 12:59:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:59:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:59:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:59:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-22 12:59:06,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2020-11-22 12:59:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:06,223 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-22 12:59:06,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-22 12:59:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:59:06,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:06,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:59:06,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:06,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:06,224 INFO L82 PathProgramCache]: Analyzing trace with hash 58944, now seen corresponding path program 1 times [2020-11-22 12:59:06,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:06,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791411879] [2020-11-22 12:59:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791411879] [2020-11-22 12:59:06,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:06,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:06,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937192813] [2020-11-22 12:59:06,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:06,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:06,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:06,298 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-22 12:59:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:06,327 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-22 12:59:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:06,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:59:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:06,329 INFO L225 Difference]: With dead ends: 11 [2020-11-22 12:59:06,329 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 12:59:06,329 INFO L677 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 [2020-11-22 12:59:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 12:59:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 12:59:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 12:59:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-22 12:59:06,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2020-11-22 12:59:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:06,332 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-22 12:59:06,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-22 12:59:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:59:06,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:06,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:59:06,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:06,334 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:06,334 INFO L82 PathProgramCache]: Analyzing trace with hash 56663621, now seen corresponding path program 1 times [2020-11-22 12:59:06,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:06,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919111748] [2020-11-22 12:59:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919111748] [2020-11-22 12:59:06,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838082688] [2020-11-22 12:59:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/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 [2020-11-22 12:59:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:59:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:06,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1409557200] [2020-11-22 12:59:06,570 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-22 12:59:06,570 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:59:06,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:59:06,580 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:59:06,581 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:59:07,020 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:59:07,135 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-11-22 12:59:07,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:59:07,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:59:07,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-11-22 12:59:07,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409592294] [2020-11-22 12:59:07,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:59:07,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:07,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:59:07,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:59:07,343 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-11-22 12:59:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:07,393 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-22 12:59:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:07,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-22 12:59:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:07,395 INFO L225 Difference]: With dead ends: 18 [2020-11-22 12:59:07,395 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:59:07,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:59:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:59:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-22 12:59:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:59:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-22 12:59:07,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2020-11-22 12:59:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:07,399 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-22 12:59:07,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:59:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-22 12:59:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:59:07,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:07,400 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2020-11-22 12:59:07,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-22 12:59:07,600 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 56662805, now seen corresponding path program 1 times [2020-11-22 12:59:07,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:07,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259340630] [2020-11-22 12:59:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259340630] [2020-11-22 12:59:07,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895435630] [2020-11-22 12:59:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/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 [2020-11-22 12:59:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:07,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 12:59:07,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:07,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:07,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1258399890] [2020-11-22 12:59:07,769 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2020-11-22 12:59:07,769 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:59:07,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:59:07,770 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:59:07,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:59:08,050 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:59:08,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:59:08,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:59:08,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2020-11-22 12:59:08,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391355978] [2020-11-22 12:59:08,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:59:08,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:08,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:59:08,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:59:08,233 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-11-22 12:59:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:08,325 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-22 12:59:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:08,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-22 12:59:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:08,327 INFO L225 Difference]: With dead ends: 17 [2020-11-22 12:59:08,327 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 12:59:08,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:59:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 12:59:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-22 12:59:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 12:59:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-22 12:59:08,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2020-11-22 12:59:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:08,331 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-22 12:59:08,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:59:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-22 12:59:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:08,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:08,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2020-11-22 12:59:08,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:08,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205052, now seen corresponding path program 2 times [2020-11-22 12:59:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:08,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792541024] [2020-11-22 12:59:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:59:08,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792541024] [2020-11-22 12:59:08,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:08,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:08,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198105467] [2020-11-22 12:59:08,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:08,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:08,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:08,581 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-11-22 12:59:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:08,621 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-22 12:59:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:08,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:59:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:08,622 INFO L225 Difference]: With dead ends: 16 [2020-11-22 12:59:08,622 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:59:08,622 INFO L677 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 [2020-11-22 12:59:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:59:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 12:59:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:59:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 12:59:08,625 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-11-22 12:59:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:08,625 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 12:59:08,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 12:59:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:08,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:08,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2020-11-22 12:59:08,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-22 12:59:08,627 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205051, now seen corresponding path program 1 times [2020-11-22 12:59:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:08,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083753936] [2020-11-22 12:59:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:08,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083753936] [2020-11-22 12:59:08,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877693792] [2020-11-22 12:59:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:08,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:59:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:08,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:08,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [816478396] [2020-11-22 12:59:08,861 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-22 12:59:08,861 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:59:08,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:59:08,862 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:59:08,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:59:09,005 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:59:09,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:59:09,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:59:09,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2020-11-22 12:59:09,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350041205] [2020-11-22 12:59:09,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:59:09,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:59:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:59:09,290 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2020-11-22 12:59:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:09,360 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-22 12:59:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 12:59:09,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-22 12:59:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:09,361 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:59:09,361 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 12:59:09,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:59:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 12:59:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-22 12:59:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:59:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-11-22 12:59:09,366 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 11 [2020-11-22 12:59:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:09,366 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-11-22 12:59:09,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:59:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-11-22 12:59:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:09,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:09,367 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2020-11-22 12:59:09,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-22 12:59:09,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205868, now seen corresponding path program 2 times [2020-11-22 12:59:09,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:09,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055635479] [2020-11-22 12:59:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:09,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055635479] [2020-11-22 12:59:09,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:09,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:59:09,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108517973] [2020-11-22 12:59:09,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:59:09,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:59:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:59:09,715 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 8 states. [2020-11-22 12:59:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:09,759 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-22 12:59:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:59:09,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-22 12:59:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:09,761 INFO L225 Difference]: With dead ends: 26 [2020-11-22 12:59:09,761 INFO L226 Difference]: Without dead ends: 26 [2020-11-22 12:59:09,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:59:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-22 12:59:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-22 12:59:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 12:59:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-22 12:59:09,765 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 11 [2020-11-22 12:59:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:09,765 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-22 12:59:09,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:59:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-22 12:59:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 12:59:09,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:09,766 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1] [2020-11-22 12:59:09,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-11-22 12:59:09,766 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1630084733, now seen corresponding path program 2 times [2020-11-22 12:59:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:09,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472396900] [2020-11-22 12:59:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-22 12:59:09,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472396900] [2020-11-22 12:59:09,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:09,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:09,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184206928] [2020-11-22 12:59:09,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:09,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:09,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:09,868 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2020-11-22 12:59:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:09,890 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-22 12:59:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:09,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-22 12:59:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:09,891 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:59:09,891 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 12:59:09,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 12:59:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-22 12:59:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:59:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-22 12:59:09,895 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2020-11-22 12:59:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:09,895 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-22 12:59:09,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-22 12:59:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:59:09,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:09,896 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1] [2020-11-22 12:59:09,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-11-22 12:59:09,896 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 12:59:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1006981104, now seen corresponding path program 1 times [2020-11-22 12:59:09,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:09,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062188491] [2020-11-22 12:59:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-22 12:59:09,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062188491] [2020-11-22 12:59:09,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:09,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:09,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827510072] [2020-11-22 12:59:09,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:09,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:09,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:09,960 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 3 states. [2020-11-22 12:59:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:09,965 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-22 12:59:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:09,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 12:59:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:09,966 INFO L225 Difference]: With dead ends: 24 [2020-11-22 12:59:09,967 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:09,967 INFO L677 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 [2020-11-22 12:59:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:09,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-11-22 12:59:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:09,968 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:09,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:09,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:09,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-11-22 12:59:09,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:09 BoogieIcfgContainer [2020-11-22 12:59:09,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:09,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:09,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:09,973 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:09,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:05" (3/4) ... [2020-11-22 12:59:09,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:09,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 12:59:09,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:59:09,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:59:10,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_63a15db3-ae05-484b-aa3e-ddac006d0172/bin/utaipan/witness.graphml [2020-11-22 12:59:10,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:10,019 INFO L168 Benchmark]: Toolchain (without parser) took 5030.90 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 75.4 MB in the beginning and 44.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,019 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:10,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.50 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 85.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.92 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:10,020 INFO L168 Benchmark]: Boogie Preprocessor took 40.40 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 83.2 MB in the end (delta: 897.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,021 INFO L168 Benchmark]: RCFGBuilder took 462.57 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 68.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,022 INFO L168 Benchmark]: TraceAbstraction took 4178.74 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.0 MB in the beginning and 46.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,022 INFO L168 Benchmark]: Witness Printer took 44.82 ms. Allocated memory is still 130.0 MB. Free memory was 46.6 MB in the beginning and 44.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:10,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.50 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 85.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.92 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.40 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 83.2 MB in the end (delta: 897.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.57 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 68.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4178.74 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.0 MB in the beginning and 46.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * Witness Printer took 44.82 ms. Allocated memory is still 130.0 MB. Free memory was 46.6 MB in the beginning and 44.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 76 SDslu, 32 SDs, 0 SdLazy, 141 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=7, 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, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 9417 SizeOfPredicates, 2 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 236/293 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...