./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6853fb9e064ccfef5e54a8bac94eb86beeed80f ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:53:36,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:53:36,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:53:36,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:53:36,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:53:36,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:53:36,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:53:36,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:53:36,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:53:36,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:53:36,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:53:36,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:53:36,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:53:36,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:53:36,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:53:36,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:53:36,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:53:36,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:53:36,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:53:36,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:53:36,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:53:36,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:53:36,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:53:36,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:53:36,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:53:36,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:53:36,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:53:36,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:53:36,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:53:36,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:53:36,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:53:36,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:53:36,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:53:36,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:53:36,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:53:36,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:53:36,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:53:36,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:53:36,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:53:36,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:53:36,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:53:36,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 21:53:36,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:53:36,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:53:36,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:53:36,154 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:53:36,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:53:36,154 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:53:36,155 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:53:36,155 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:53:36,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:53:36,156 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:53:36,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 21:53:36,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 21:53:36,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 21:53:36,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:53:36,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:53:36,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:53:36,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:53:36,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:53:36,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:53:36,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:53:36,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:53:36,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:53:36,159 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_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-12-07 21:53:36,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:53:36,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:53:36,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:53:36,271 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:53:36,271 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:53:36,272 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-12-07 21:53:36,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/data/310bc10a2/99e687e62a834d7bb86f25642012b6a0/FLAG78d9456b6 [2019-12-07 21:53:36,718 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:53:36,718 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-12-07 21:53:36,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/data/310bc10a2/99e687e62a834d7bb86f25642012b6a0/FLAG78d9456b6 [2019-12-07 21:53:36,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/data/310bc10a2/99e687e62a834d7bb86f25642012b6a0 [2019-12-07 21:53:36,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:53:36,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:53:36,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:36,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:53:36,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:53:36,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174ba895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36, skipping insertion in model container [2019-12-07 21:53:36,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:53:36,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:53:36,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:36,900 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:53:36,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:36,924 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:53:36,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36 WrapperNode [2019-12-07 21:53:36,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:36,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:36,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:53:36,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:53:36,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:36,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:53:36,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:53:36,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:53:36,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... [2019-12-07 21:53:36,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:53:36,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:53:36,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:53:36,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:53:36,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:53:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:53:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:53:37,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:53:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 21:53:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:53:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:53:37,278 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:53:37,278 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 21:53:37,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:37 BoogieIcfgContainer [2019-12-07 21:53:37,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:53:37,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:53:37,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:53:37,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:53:37,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:53:36" (1/3) ... [2019-12-07 21:53:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b82e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:37, skipping insertion in model container [2019-12-07 21:53:37,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:36" (2/3) ... [2019-12-07 21:53:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b82e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:37, skipping insertion in model container [2019-12-07 21:53:37,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:37" (3/3) ... [2019-12-07 21:53:37,285 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2019-12-07 21:53:37,291 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:53:37,295 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-12-07 21:53:37,303 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-12-07 21:53:37,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:53:37,315 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 21:53:37,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:53:37,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:53:37,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:53:37,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:53:37,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:53:37,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:53:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 21:53:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:53:37,329 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:37,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:53:37,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:53:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash 3894484, now seen corresponding path program 1 times [2019-12-07 21:53:37,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:37,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881775807] [2019-12-07 21:53:37,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:53:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:53:37,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881775807] [2019-12-07 21:53:37,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:53:37,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:53:37,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042704570] [2019-12-07 21:53:37,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:53:37,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:53:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:53:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:53:37,442 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-12-07 21:53:37,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:53:37,470 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-12-07 21:53:37,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:53:37,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 21:53:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:53:37,478 INFO L225 Difference]: With dead ends: 39 [2019-12-07 21:53:37,478 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 21:53:37,479 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:53:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 21:53:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2019-12-07 21:53:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 21:53:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 21:53:37,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2019-12-07 21:53:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:53:37,501 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 21:53:37,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:53:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-07 21:53:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:53:37,501 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:37,501 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:53:37,501 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:53:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 3793645, now seen corresponding path program 1 times [2019-12-07 21:53:37,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:37,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718449709] [2019-12-07 21:53:37,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:53:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:53:37,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718449709] [2019-12-07 21:53:37,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:53:37,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:53:37,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348654418] [2019-12-07 21:53:37,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:53:37,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:53:37,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:53:37,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:53:37,545 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-12-07 21:53:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:53:37,583 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-12-07 21:53:37,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:53:37,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 21:53:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:53:37,584 INFO L225 Difference]: With dead ends: 22 [2019-12-07 21:53:37,584 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 21:53:37,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:53:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 21:53:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 21:53:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 21:53:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 21:53:37,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2019-12-07 21:53:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:53:37,588 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 21:53:37,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:53:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 21:53:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:53:37,588 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:37,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:53:37,589 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:53:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash 3793646, now seen corresponding path program 1 times [2019-12-07 21:53:37,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:37,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663848246] [2019-12-07 21:53:37,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:53:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:53:37,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663848246] [2019-12-07 21:53:37,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:53:37,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:53:37,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509430559] [2019-12-07 21:53:37,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:53:37,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:53:37,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:53:37,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:53:37,630 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2019-12-07 21:53:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:53:37,709 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-12-07 21:53:37,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:53:37,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 21:53:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:53:37,711 INFO L225 Difference]: With dead ends: 51 [2019-12-07 21:53:37,711 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 21:53:37,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:53:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 21:53:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 24. [2019-12-07 21:53:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 21:53:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-12-07 21:53:37,715 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 4 [2019-12-07 21:53:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:53:37,715 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 21:53:37,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:53:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-12-07 21:53:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:53:37,715 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:37,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:53:37,716 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:53:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:37,716 INFO L82 PathProgramCache]: Analyzing trace with hash 117602987, now seen corresponding path program 1 times [2019-12-07 21:53:37,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:37,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501007446] [2019-12-07 21:53:37,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:53:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:53:37,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501007446] [2019-12-07 21:53:37,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:53:37,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:53:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685194543] [2019-12-07 21:53:37,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:53:37,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:53:37,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:53:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:53:37,738 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-12-07 21:53:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:53:37,754 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-12-07 21:53:37,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:53:37,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 21:53:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:53:37,755 INFO L225 Difference]: With dead ends: 23 [2019-12-07 21:53:37,755 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 21:53:37,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:53:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 21:53:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 21:53:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 21:53:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-12-07 21:53:37,757 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2019-12-07 21:53:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:53:37,757 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-12-07 21:53:37,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:53:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-12-07 21:53:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:53:37,758 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:37,758 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:53:37,758 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:53:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash 117602988, now seen corresponding path program 1 times [2019-12-07 21:53:37,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:37,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123876233] [2019-12-07 21:53:37,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:37,797 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:53:37,797 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:53:37,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:53:37 BoogieIcfgContainer [2019-12-07 21:53:37,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:53:37,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:53:37,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:53:37,811 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:53:37,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:37" (3/4) ... [2019-12-07 21:53:37,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:53:37,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_01fa3899-a734-483c-8279-911a6d7895e5/bin/utaipan/witness.graphml [2019-12-07 21:53:37,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:53:37,839 INFO L168 Benchmark]: Toolchain (without parser) took 1105.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.2 MB in the beginning and 986.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:37,839 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 21:53:37,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:37,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.00 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 21:53:37,841 INFO L168 Benchmark]: Boogie Preprocessor took 19.69 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:37,841 INFO L168 Benchmark]: RCFGBuilder took 303.60 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: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:37,842 INFO L168 Benchmark]: TraceAbstraction took 530.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.8 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:37,842 INFO L168 Benchmark]: Witness Printer took 26.86 ms. Allocated memory is still 1.1 GB. Free memory is still 986.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:37,845 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 191.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.00 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 19.69 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 303.60 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: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.8 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. * Witness Printer took 26.86 ms. Allocated memory is still 1.1 GB. Free memory is still 986.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 [L33] COND TRUE i < 100 [L21] int a[n], i; [L22] i = 0 [L22] COND TRUE i < size [L23] EXPR b[i] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 11 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 96 SDslu, 36 SDs, 0 SdLazy, 100 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 41 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...