./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/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 64bit --witnessprinter.graph.data.programhash 282a32bc5fb3d70423f87a450340f7a26ab0f093 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:57:38,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:57:38,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:57:38,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:57:38,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:57:38,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:57:38,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:57:38,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:57:38,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:57:38,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:57:38,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:57:38,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:57:38,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:57:38,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:57:38,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:57:38,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:57:38,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:57:38,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:57:38,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:57:38,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:57:38,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:57:38,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:57:38,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:57:38,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:57:38,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:57:38,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:57:38,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:57:38,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:57:38,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:57:38,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:57:38,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:57:38,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:57:38,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:57:38,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:57:38,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:57:38,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:57:38,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:57:38,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:57:38,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:57:38,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:57:38,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:57:38,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2019-12-07 20:57:38,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:57:38,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:57:38,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:57:38,760 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:57:38,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:57:38,760 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:57:38,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:57:38,760 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:57:38,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:57:38,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:57:38,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:57:38,761 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:57:38,761 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:57:38,761 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:57:38,761 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:57:38,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:57:38,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:57:38,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:57:38,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:57:38,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:57:38,763 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:57:38,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:38,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:57:38,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:57:38,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:57:38,765 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2019-12-07 20:57:38,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:57:38,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:57:38,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:57:38,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:57:38,875 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:57:38,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-12-07 20:57:38,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/data/58e3df024/a973c1ff1e9d458a8dc430dff88779c4/FLAG3361c324f [2019-12-07 20:57:39,233 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:57:39,233 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-12-07 20:57:39,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/data/58e3df024/a973c1ff1e9d458a8dc430dff88779c4/FLAG3361c324f [2019-12-07 20:57:39,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/data/58e3df024/a973c1ff1e9d458a8dc430dff88779c4 [2019-12-07 20:57:39,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:57:39,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:57:39,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:39,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:57:39,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:57:39,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449728aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39, skipping insertion in model container [2019-12-07 20:57:39,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:57:39,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:57:39,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:39,370 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:57:39,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:39,435 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:57:39,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39 WrapperNode [2019-12-07 20:57:39,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:39,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:39,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:57:39,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:57:39,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:39,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:57:39,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:57:39,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:57:39,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... [2019-12-07 20:57:39,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:57:39,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:57:39,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:57:39,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:57:39,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:57:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:57:39,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:57:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:57:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:57:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:57:39,710 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:57:39,710 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:57:39,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:39 BoogieIcfgContainer [2019-12-07 20:57:39,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:57:39,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:57:39,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:57:39,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:57:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:57:39" (1/3) ... [2019-12-07 20:57:39,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125eee7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:39, skipping insertion in model container [2019-12-07 20:57:39,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:39" (2/3) ... [2019-12-07 20:57:39,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125eee7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:39, skipping insertion in model container [2019-12-07 20:57:39,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:39" (3/3) ... [2019-12-07 20:57:39,717 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2019-12-07 20:57:39,724 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:57:39,728 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 20:57:39,736 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 20:57:39,749 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:57:39,749 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 20:57:39,749 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:57:39,749 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:57:39,749 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:57:39,749 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:57:39,749 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:57:39,749 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:57:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 20:57:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 20:57:39,762 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:39,763 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 20:57:39,763 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash 90656, now seen corresponding path program 1 times [2019-12-07 20:57:39,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:39,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840430283] [2019-12-07 20:57:39,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:39,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840430283] [2019-12-07 20:57:39,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:39,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:57:39,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074940179] [2019-12-07 20:57:39,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:57:39,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:57:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:39,882 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-07 20:57:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:39,915 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-07 20:57:39,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:39,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 20:57:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:39,924 INFO L225 Difference]: With dead ends: 16 [2019-12-07 20:57:39,924 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:57:39,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:57:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 20:57:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:57:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-12-07 20:57:39,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 3 [2019-12-07 20:57:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:39,947 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 20:57:39,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:57:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-12-07 20:57:39,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 20:57:39,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:39,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 20:57:39,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:39,948 INFO L82 PathProgramCache]: Analyzing trace with hash 90657, now seen corresponding path program 1 times [2019-12-07 20:57:39,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:39,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387286029] [2019-12-07 20:57:39,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:39,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387286029] [2019-12-07 20:57:39,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:39,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:57:39,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776635556] [2019-12-07 20:57:39,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:57:39,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:39,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:57:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:39,983 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2019-12-07 20:57:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:40,002 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-12-07 20:57:40,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:40,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 20:57:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:40,003 INFO L225 Difference]: With dead ends: 17 [2019-12-07 20:57:40,003 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 20:57:40,004 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 20:57:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 20:57:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 20:57:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 20:57:40,007 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 3 [2019-12-07 20:57:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:40,007 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 20:57:40,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:57:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 20:57:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 20:57:40,008 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:40,008 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-12-07 20:57:40,008 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash 87172633, now seen corresponding path program 1 times [2019-12-07 20:57:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:40,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939603655] [2019-12-07 20:57:40,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939603655] [2019-12-07 20:57:40,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196937481] [2019-12-07 20:57:40,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:40,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 20:57:40,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:40,118 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 20:57:40,119 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:57:40,124 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:57:40,125 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:57:40,125 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 20:57:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,131 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1534803987] [2019-12-07 20:57:40,165 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2019-12-07 20:57:40,166 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:57:40,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:57:40,173 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:57:40,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:57:40,380 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:57:40,516 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:57:40,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:57:40,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2019-12-07 20:57:40,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216699016] [2019-12-07 20:57:40,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:57:40,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:40,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:57:40,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:57:40,518 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 6 states. [2019-12-07 20:57:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:40,591 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2019-12-07 20:57:40,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 20:57:40,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-12-07 20:57:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:40,592 INFO L225 Difference]: With dead ends: 41 [2019-12-07 20:57:40,593 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 20:57:40,593 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-12-07 20:57:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 20:57:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 23. [2019-12-07 20:57:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 20:57:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-12-07 20:57:40,597 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 5 [2019-12-07 20:57:40,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:40,597 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-12-07 20:57:40,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:57:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-12-07 20:57:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:57:40,598 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:40,598 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-12-07 20:57:40,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:40,799 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1493658438, now seen corresponding path program 1 times [2019-12-07 20:57:40,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:40,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659070456] [2019-12-07 20:57:40,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659070456] [2019-12-07 20:57:40,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928386825] [2019-12-07 20:57:40,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:40,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:57:40,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,886 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:40,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040913631] [2019-12-07 20:57:40,906 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 20:57:40,906 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:57:40,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:57:40,906 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:57:40,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:57:41,038 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:57:41,270 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:57:41,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:57:41,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2019-12-07 20:57:41,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437397710] [2019-12-07 20:57:41,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 20:57:41,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:41,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 20:57:41,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-12-07 20:57:41,272 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 9 states. [2019-12-07 20:57:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:41,301 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-12-07 20:57:41,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:57:41,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2019-12-07 20:57:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:41,302 INFO L225 Difference]: With dead ends: 27 [2019-12-07 20:57:41,302 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 20:57:41,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-12-07 20:57:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 20:57:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-12-07 20:57:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 20:57:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-12-07 20:57:41,306 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2019-12-07 20:57:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:41,307 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-12-07 20:57:41,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 20:57:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-12-07 20:57:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:41,307 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:41,307 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2019-12-07 20:57:41,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:41,508 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 928759297, now seen corresponding path program 2 times [2019-12-07 20:57:41,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:41,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603478729] [2019-12-07 20:57:41,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:41,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603478729] [2019-12-07 20:57:41,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637428202] [2019-12-07 20:57:41,698 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/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 [2019-12-07 20:57:41,722 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 20:57:41,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:57:41,722 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:57:41,724 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 20:57:41,767 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 20:57:41,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 20:57:41,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 11 [2019-12-07 20:57:41,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913345073] [2019-12-07 20:57:41,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:57:41,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:57:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-12-07 20:57:41,815 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2019-12-07 20:57:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:41,835 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-12-07 20:57:41,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:41,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 20:57:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:41,836 INFO L225 Difference]: With dead ends: 25 [2019-12-07 20:57:41,836 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 20:57:41,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-12-07 20:57:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 20:57:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 20:57:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 20:57:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-12-07 20:57:41,838 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2019-12-07 20:57:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:41,838 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-12-07 20:57:41,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:57:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-12-07 20:57:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 20:57:41,839 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:41,839 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1] [2019-12-07 20:57:42,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:42,040 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:42,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1088641830, now seen corresponding path program 2 times [2019-12-07 20:57:42,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:42,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253620399] [2019-12-07 20:57:42,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:42,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253620399] [2019-12-07 20:57:42,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189353954] [2019-12-07 20:57:42,203 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:42,226 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 20:57:42,226 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:57:42,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:57:42,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 20:57:42,243 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 20:57:42,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 20:57:42,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [8] total 10 [2019-12-07 20:57:42,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579047734] [2019-12-07 20:57:42,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:42,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:42,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:42,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:57:42,255 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2019-12-07 20:57:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:42,262 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-12-07 20:57:42,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:42,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-12-07 20:57:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:42,263 INFO L225 Difference]: With dead ends: 24 [2019-12-07 20:57:42,263 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:57:42,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:57:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:57:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 20:57:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 20:57:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-12-07 20:57:42,266 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2019-12-07 20:57:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:42,266 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 20:57:42,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-12-07 20:57:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 20:57:42,267 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:42,267 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2019-12-07 20:57:42,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:42,468 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 611875395, now seen corresponding path program 1 times [2019-12-07 20:57:42,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:42,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524392601] [2019-12-07 20:57:42,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:42,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524392601] [2019-12-07 20:57:42,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48834158] [2019-12-07 20:57:42,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:42,705 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 20:57:42,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:42,726 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:42,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007957431] [2019-12-07 20:57:42,806 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 20:57:42,806 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:57:42,806 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:57:42,806 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:57:42,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:57:42,912 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:57:43,111 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:57:43,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:57:43,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2019-12-07 20:57:43,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347469407] [2019-12-07 20:57:43,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 20:57:43,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 20:57:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2019-12-07 20:57:43,113 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 17 states. [2019-12-07 20:57:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:43,158 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 20:57:43,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 20:57:43,158 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2019-12-07 20:57:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:43,159 INFO L225 Difference]: With dead ends: 40 [2019-12-07 20:57:43,159 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 20:57:43,159 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2019-12-07 20:57:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 20:57:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-07 20:57:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 20:57:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-12-07 20:57:43,162 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 17 [2019-12-07 20:57:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:43,162 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-12-07 20:57:43,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 20:57:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-12-07 20:57:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 20:57:43,163 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:43,163 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1] [2019-12-07 20:57:43,363 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:43,364 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:43,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2043593219, now seen corresponding path program 2 times [2019-12-07 20:57:43,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:43,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811581895] [2019-12-07 20:57:43,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:43,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811581895] [2019-12-07 20:57:43,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307003694] [2019-12-07 20:57:43,509 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:43,529 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 20:57:43,529 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:57:43,530 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 20:57:43,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-12-07 20:57:43,612 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-12-07 20:57:43,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 20:57:43,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [16] total 20 [2019-12-07 20:57:43,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976189283] [2019-12-07 20:57:43,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:57:43,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:57:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2019-12-07 20:57:43,636 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2019-12-07 20:57:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:43,697 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-12-07 20:57:43,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:57:43,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-12-07 20:57:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:43,698 INFO L225 Difference]: With dead ends: 39 [2019-12-07 20:57:43,698 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 20:57:43,698 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2019-12-07 20:57:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 20:57:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-12-07 20:57:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 20:57:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-12-07 20:57:43,700 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2019-12-07 20:57:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:43,700 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-12-07 20:57:43,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:57:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-12-07 20:57:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-07 20:57:43,701 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:43,701 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:43,902 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:57:43,903 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 20:57:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1074123864, now seen corresponding path program 1 times [2019-12-07 20:57:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:43,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044306564] [2019-12-07 20:57:43,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2019-12-07 20:57:43,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044306564] [2019-12-07 20:57:43,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:43,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 20:57:43,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251024268] [2019-12-07 20:57:43,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:57:43,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:57:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:57:43,983 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 6 states. [2019-12-07 20:57:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:44,017 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-12-07 20:57:44,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:44,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-12-07 20:57:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:44,017 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:57:44,017 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:57:44,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:57:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:57:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:57:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:57:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:57:44,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-12-07 20:57:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:44,018 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:57:44,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:57:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:57:44,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:57:44,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:57:44 BoogieIcfgContainer [2019-12-07 20:57:44,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:57:44,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:57:44,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:57:44,022 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:57:44,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:39" (3/4) ... [2019-12-07 20:57:44,025 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:57:44,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 20:57:44,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 20:57:44,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 20:57:44,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7ca689f-766d-4598-ba4d-56ea38fedffe/bin/utaipan/witness.graphml [2019-12-07 20:57:44,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:57:44,063 INFO L168 Benchmark]: Toolchain (without parser) took 4815.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -141.9 MB). Peak memory consumption was 699.6 kB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,064 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:44,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:44,064 INFO L168 Benchmark]: Boogie Preprocessor took 17.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,065 INFO L168 Benchmark]: RCFGBuilder took 230.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,065 INFO L168 Benchmark]: TraceAbstraction took 4309.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -18.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,065 INFO L168 Benchmark]: Witness Printer took 40.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:44,067 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 230.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4309.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -18.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Witness Printer took 40.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 7 error locations. Result: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 14, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 149 SDslu, 209 SDs, 0 SdLazy, 183 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 220 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 289 ConstructedInterpolants, 1 QuantifiedInterpolants, 46360 SizeOfPredicates, 3 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 692/1078 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...