./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI --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 0.2.0-7b2dab5 [2021-10-11 02:23:39,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:39,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:39,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:39,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:39,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:39,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:39,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:39,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:39,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:39,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:39,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:39,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:39,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:39,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:39,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:39,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:39,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:39,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:39,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:39,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:39,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:39,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:39,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:39,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:39,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:39,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:39,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:39,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:39,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:39,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:39,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:39,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:39,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:39,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:39,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:39,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:39,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:39,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:39,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:39,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:39,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:23:39,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:39,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:39,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:39,805 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:39,805 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:39,805 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:39,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:39,805 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:39,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:39,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:39,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:39,807 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:39,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:39,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:39,808 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:39,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:23:39,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:23:39,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:39,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:39,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:23:39,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:39,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:39,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:39,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:23:39,810 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:23:39,810 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:23:39,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:39,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:39,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:39,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:39,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:39,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:39,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:39,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:39,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:39,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:39,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:39,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:39,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:39,813 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f17cf5334c3a5b079beafc57a2e2bffaea721f [2021-10-11 02:23:40,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:40,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:40,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:40,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:40,186 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:40,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-10-11 02:23:40,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/data/84675a7c0/0c71277c7ea44545994a60bcb00c8b73/FLAGf344544b8 [2021-10-11 02:23:40,680 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:40,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-10-11 02:23:40,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/data/84675a7c0/0c71277c7ea44545994a60bcb00c8b73/FLAGf344544b8 [2021-10-11 02:23:41,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/data/84675a7c0/0c71277c7ea44545994a60bcb00c8b73 [2021-10-11 02:23:41,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:41,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:41,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:41,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:41,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:41,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8a3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41, skipping insertion in model container [2021-10-11 02:23:41,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:41,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:41,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:41,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:41,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:41,327 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:41,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41 WrapperNode [2021-10-11 02:23:41,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:41,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:41,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:41,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:41,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:41,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:41,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:41,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:41,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... [2021-10-11 02:23:41,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:41,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:41,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:41,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:41,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:41,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:41,692 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:41,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:41 BoogieIcfgContainer [2021-10-11 02:23:41,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:41,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:41,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:41,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:41,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:41" (1/3) ... [2021-10-11 02:23:41,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b440d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:41, skipping insertion in model container [2021-10-11 02:23:41,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:41" (2/3) ... [2021-10-11 02:23:41,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b440d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:41, skipping insertion in model container [2021-10-11 02:23:41,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:41" (3/3) ... [2021-10-11 02:23:41,720 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers3.c [2021-10-11 02:23:41,734 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:41,738 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-10-11 02:23:41,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:23:41,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:41,813 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:23:41,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:41,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:41,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:41,814 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:41,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:41,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:23:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:23:41,874 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:41,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:23:41,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash 59760, now seen corresponding path program 1 times [2021-10-11 02:23:41,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:41,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442631482] [2021-10-11 02:23:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442631482] [2021-10-11 02:23:42,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:42,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:42,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098067035] [2021-10-11 02:23:42,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:42,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:42,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:42,107 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:23:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:42,138 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-11 02:23:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:42,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:23:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:42,151 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:23:42,151 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:23:42,153 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 [2021-10-11 02:23:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:23:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2021-10-11 02:23:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:23:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:23:42,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2021-10-11 02:23:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:42,185 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:23:42,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:23:42,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:23:42,186 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:42,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:23:42,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:42,187 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 58943, now seen corresponding path program 1 times [2021-10-11 02:23:42,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:42,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085741592] [2021-10-11 02:23:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085741592] [2021-10-11 02:23:42,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:42,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:42,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828645852] [2021-10-11 02:23:42,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:42,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:42,229 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2021-10-11 02:23:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:42,243 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:23:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:42,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:23:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:42,248 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:23:42,249 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:23:42,250 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 [2021-10-11 02:23:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:23:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:23:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:23:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:23:42,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2021-10-11 02:23:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:42,252 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:23:42,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:23:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:23:42,253 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:42,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:23:42,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:42,254 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash 58944, now seen corresponding path program 1 times [2021-10-11 02:23:42,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:42,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217430738] [2021-10-11 02:23:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217430738] [2021-10-11 02:23:42,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:42,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:42,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552595366] [2021-10-11 02:23:42,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:42,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:42,354 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2021-10-11 02:23:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:42,370 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:23:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:42,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:23:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:42,372 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:23:42,372 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:23:42,372 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 [2021-10-11 02:23:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:23:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:23:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:23:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:23:42,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 3 [2021-10-11 02:23:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:42,375 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:23:42,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:23:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:42,376 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:42,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:23:42,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:42,377 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash 56663621, now seen corresponding path program 1 times [2021-10-11 02:23:42,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:42,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003441903] [2021-10-11 02:23:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003441903] [2021-10-11 02:23:42,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547593039] [2021-10-11 02:23:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:42,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:42,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:42,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395622376] [2021-10-11 02:23:42,593 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:23:42,593 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:42,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:42,604 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:42,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:43,219 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:43,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:43,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:43,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-11 02:23:43,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450069473] [2021-10-11 02:23:43,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:23:43,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:43,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:23:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:43,458 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2021-10-11 02:23:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:43,497 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-11 02:23:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:43,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:23:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:43,499 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:23:43,499 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:23:43,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:23:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-11 02:23:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-11 02:23:43,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2021-10-11 02:23:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:43,508 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-11 02:23:43,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:23:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-11 02:23:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:43,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:43,508 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-11 02:23:43,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:23:43,725 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:43,725 INFO L82 PathProgramCache]: Analyzing trace with hash 56662805, now seen corresponding path program 1 times [2021-10-11 02:23:43,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:43,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656680101] [2021-10-11 02:23:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:43,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656680101] [2021-10-11 02:23:43,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516121357] [2021-10-11 02:23:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:43,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:23:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:43,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:43,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1433315592] [2021-10-11 02:23:43,912 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2021-10-11 02:23:43,912 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:43,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:43,913 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:43,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:44,175 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:44,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:44,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:44,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-10-11 02:23:44,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582619022] [2021-10-11 02:23:44,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:23:44,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:23:44,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:23:44,361 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2021-10-11 02:23:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:44,440 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-11 02:23:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:44,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:23:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:44,445 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:23:44,445 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:23:44,446 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 [2021-10-11 02:23:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:23:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:23:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:23:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 02:23:44,451 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2021-10-11 02:23:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:44,451 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 02:23:44,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:23:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 02:23:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:44,453 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:44,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2021-10-11 02:23:44,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:44,668 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205052, now seen corresponding path program 2 times [2021-10-11 02:23:44,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:44,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241166112] [2021-10-11 02:23:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:23:44,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241166112] [2021-10-11 02:23:44,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:44,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:44,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509220914] [2021-10-11 02:23:44,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:44,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:44,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:44,725 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2021-10-11 02:23:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:44,751 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 02:23:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:44,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:23:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:44,753 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:23:44,753 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:44,754 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 [2021-10-11 02:23:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:23:44,756 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2021-10-11 02:23:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:44,756 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:23:44,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:23:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:44,757 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:44,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2021-10-11 02:23:44,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-11 02:23:44,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205051, now seen corresponding path program 1 times [2021-10-11 02:23:44,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:44,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119374522] [2021-10-11 02:23:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:44,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119374522] [2021-10-11 02:23:44,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357630344] [2021-10-11 02:23:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:23:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:44,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1917403377] [2021-10-11 02:23:45,036 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:23:45,037 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:45,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:45,037 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:45,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:45,225 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:45,474 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:45,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:45,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-10-11 02:23:45,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178129713] [2021-10-11 02:23:45,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:23:45,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:23:45,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:23:45,478 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2021-10-11 02:23:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,543 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-11 02:23:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:23:45,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2021-10-11 02:23:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,546 INFO L225 Difference]: With dead ends: 32 [2021-10-11 02:23:45,547 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:23:45,547 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 [2021-10-11 02:23:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:23:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-11 02:23:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:23:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-11 02:23:45,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 11 [2021-10-11 02:23:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,555 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-11 02:23:45,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:23:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-11 02:23:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:45,557 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,557 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2021-10-11 02:23:45,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-11 02:23:45,785 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2095205868, now seen corresponding path program 2 times [2021-10-11 02:23:45,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795824000] [2021-10-11 02:23:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:45,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795824000] [2021-10-11 02:23:45,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:45,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:23:45,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757279943] [2021-10-11 02:23:45,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:45,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:45,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:45,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:45,892 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 8 states. [2021-10-11 02:23:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:45,931 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-11 02:23:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:23:45,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2021-10-11 02:23:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:45,932 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:23:45,932 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:23:45,932 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 [2021-10-11 02:23:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:23:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:23:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:23:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-11 02:23:45,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 11 [2021-10-11 02:23:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:45,935 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-11 02:23:45,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-11 02:23:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:23:45,936 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:45,936 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1] [2021-10-11 02:23:45,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-11 02:23:45,937 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1630084733, now seen corresponding path program 2 times [2021-10-11 02:23:45,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:45,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025927476] [2021-10-11 02:23:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-11 02:23:46,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025927476] [2021-10-11 02:23:46,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:46,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440305799] [2021-10-11 02:23:46,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:46,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:46,003 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2021-10-11 02:23:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:46,021 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-11 02:23:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:46,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-10-11 02:23:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:46,022 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:23:46,023 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:23:46,023 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 [2021-10-11 02:23:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:23:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 02:23:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:23:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-11 02:23:46,025 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2021-10-11 02:23:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:46,026 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-11 02:23:46,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-11 02:23:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:23:46,026 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:46,027 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1] [2021-10-11 02:23:46,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-11 02:23:46,027 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:46,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1006981104, now seen corresponding path program 1 times [2021-10-11 02:23:46,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:46,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926717958] [2021-10-11 02:23:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-11 02:23:46,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926717958] [2021-10-11 02:23:46,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:46,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:46,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341795667] [2021-10-11 02:23:46,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:46,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:46,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:46,081 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 3 states. [2021-10-11 02:23:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:46,086 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-11 02:23:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:46,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:23:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:46,087 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:23:46,087 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:46,088 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 [2021-10-11 02:23:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:46,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-11 02:23:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:46,089 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:46,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:46,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:46,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-11 02:23:46,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:46 BoogieIcfgContainer [2021-10-11 02:23:46,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:46,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:46,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:46,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:46,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:41" (3/4) ... [2021-10-11 02:23:46,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:23:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:23:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:46,132 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0d05ee-c02b-4bf2-8f1a-71e2e1a248cb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:46,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:46,134 INFO L168 Benchmark]: Toolchain (without parser) took 5036.02 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.9 MB in the beginning and 43.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,134 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:46,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.60 ms. Allocated memory is still 86.0 MB. Free memory was 47.6 MB in the beginning and 64.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.55 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:46,135 INFO L168 Benchmark]: Boogie Preprocessor took 22.13 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 61.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,135 INFO L168 Benchmark]: RCFGBuilder took 287.96 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 46.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,136 INFO L168 Benchmark]: TraceAbstraction took 4397.55 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 46.2 MB in the beginning and 45.4 MB in the end (delta: 761.9 kB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,136 INFO L168 Benchmark]: Witness Printer took 38.84 ms. Allocated memory is still 125.8 MB. Free memory was 45.4 MB in the beginning and 43.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:46,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.60 ms. Allocated memory is still 86.0 MB. Free memory was 47.6 MB in the beginning and 64.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.55 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.13 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 61.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.96 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 46.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4397.55 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 46.2 MB in the beginning and 45.4 MB in the end (delta: 761.9 kB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. * Witness Printer took 38.84 ms. Allocated memory is still 125.8 MB. Free memory was 45.4 MB in the beginning and 43.3 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: 4.2s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s 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, 0.8s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 9417 SizeOfPredicates, 0 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...