./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.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_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/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 6b14dd63832ca953bb678ff696ab3d8598ab5b62 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:31:42,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:31:42,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:31:42,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:31:42,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:31:42,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:31:42,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:31:42,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:31:42,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:31:42,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:31:42,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:31:42,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:31:42,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:31:42,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:31:42,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:31:42,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:31:42,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:31:42,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:31:42,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:31:42,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:31:42,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:31:42,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:31:42,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:31:42,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:31:42,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:31:42,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:31:42,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:31:42,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:31:42,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:31:42,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:31:42,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:31:42,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:31:42,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:31:42,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:31:42,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:31:42,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:31:42,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:31:42,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:31:42,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:31:42,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:31:42,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:31:42,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 13:31:43,006 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:31:43,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:31:43,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:31:43,006 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:31:43,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:31:43,007 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:31:43,008 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:31:43,008 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:31:43,008 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:31:43,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:31:43,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:31:43,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 13:31:43,009 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:31:43,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:31:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:31:43,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:31:43,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:31:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:31:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:31:43,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:31:43,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:31:43,011 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_82c1459f-b396-4945-b746-f00b53473b85/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 -> 6b14dd63832ca953bb678ff696ab3d8598ab5b62 [2019-12-07 13:31:43,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:31:43,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:31:43,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:31:43,121 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:31:43,121 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:31:43,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c [2019-12-07 13:31:43,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/data/5494df856/ec61afec0e094272987ed00dee3faa27/FLAGafbf12e2b [2019-12-07 13:31:43,533 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:31:43,533 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c [2019-12-07 13:31:43,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/data/5494df856/ec61afec0e094272987ed00dee3faa27/FLAGafbf12e2b [2019-12-07 13:31:43,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/data/5494df856/ec61afec0e094272987ed00dee3faa27 [2019-12-07 13:31:43,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:31:43,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:31:43,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:31:43,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:31:43,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:31:43,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:31:43" (1/1) ... [2019-12-07 13:31:43,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae82c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:43, skipping insertion in model container [2019-12-07 13:31:43,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:31:43" (1/1) ... [2019-12-07 13:31:43,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:31:43,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:31:44,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:31:44,065 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:31:44,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:31:44,119 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:31:44,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44 WrapperNode [2019-12-07 13:31:44,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:31:44,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:31:44,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:31:44,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:31:44,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:31:44,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:31:44,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:31:44,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:31:44,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... [2019-12-07 13:31:44,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:31:44,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:31:44,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:31:44,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:31:44,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/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 13:31:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:31:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:31:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:31:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:31:44,318 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:31:44,319 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:31:44,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:31:44 BoogieIcfgContainer [2019-12-07 13:31:44,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:31:44,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:31:44,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:31:44,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:31:44,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:31:43" (1/3) ... [2019-12-07 13:31:44,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e74f067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:31:44, skipping insertion in model container [2019-12-07 13:31:44,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:31:44" (2/3) ... [2019-12-07 13:31:44,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e74f067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:31:44, skipping insertion in model container [2019-12-07 13:31:44,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:31:44" (3/3) ... [2019-12-07 13:31:44,324 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero3.c [2019-12-07 13:31:44,330 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:31:44,335 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 13:31:44,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 13:31:44,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:31:44,355 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 13:31:44,355 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:31:44,355 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:31:44,355 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:31:44,355 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:31:44,355 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:31:44,355 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:31:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 13:31:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 13:31:44,369 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:31:44,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 13:31:44,370 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 13:31:44,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:31:44,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1553, now seen corresponding path program 1 times [2019-12-07 13:31:44,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:31:44,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526130795] [2019-12-07 13:31:44,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:31:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:44,477 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 13:31:44,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526130795] [2019-12-07 13:31:44,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:31:44,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:31:44,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688833229] [2019-12-07 13:31:44,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:31:44,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:31:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:31:44,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:31:44,493 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 13:31:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:31:44,513 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-12-07 13:31:44,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:31:44,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 13:31:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:31:44,520 INFO L225 Difference]: With dead ends: 8 [2019-12-07 13:31:44,520 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 13:31:44,521 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 13:31:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 13:31:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 13:31:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 13:31:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 13:31:44,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2019-12-07 13:31:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:31:44,541 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 13:31:44,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:31:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 13:31:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:31:44,542 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:31:44,542 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:31:44,542 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 13:31:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:31:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 48179, now seen corresponding path program 1 times [2019-12-07 13:31:44,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:31:44,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062598822] [2019-12-07 13:31:44,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:31:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:44,573 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 13:31:44,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062598822] [2019-12-07 13:31:44,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:31:44,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:31:44,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981020340] [2019-12-07 13:31:44,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:31:44,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:31:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:31:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:31:44,575 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2019-12-07 13:31:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:31:44,582 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-12-07 13:31:44,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:31:44,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 13:31:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:31:44,583 INFO L225 Difference]: With dead ends: 6 [2019-12-07 13:31:44,583 INFO L226 Difference]: Without dead ends: 6 [2019-12-07 13:31:44,584 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 13:31:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-12-07 13:31:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 13:31:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 13:31:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-12-07 13:31:44,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2019-12-07 13:31:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:31:44,586 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 13:31:44,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:31:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-12-07 13:31:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 13:31:44,586 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:31:44,586 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 13:31:44,586 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 13:31:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:31:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash 46301616, now seen corresponding path program 1 times [2019-12-07 13:31:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:31:44,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070419313] [2019-12-07 13:31:44,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:31:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:44,622 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 13:31:44,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070419313] [2019-12-07 13:31:44,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:31:44,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:31:44,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052017463] [2019-12-07 13:31:44,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:31:44,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:31:44,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:31:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:31:44,623 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2019-12-07 13:31:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:31:44,633 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-12-07 13:31:44,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:31:44,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 13:31:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:31:44,634 INFO L225 Difference]: With dead ends: 7 [2019-12-07 13:31:44,634 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 13:31:44,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:31:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 13:31:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 13:31:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 13:31:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 13:31:44,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-12-07 13:31:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:31:44,636 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 13:31:44,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:31:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 13:31:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 13:31:44,637 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:31:44,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 13:31:44,637 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 13:31:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:31:44,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1435340626, now seen corresponding path program 1 times [2019-12-07 13:31:44,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:31:44,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222117955] [2019-12-07 13:31:44,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:31:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:31:44,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222117955] [2019-12-07 13:31:44,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632450753] [2019-12-07 13:31:44,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/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 13:31:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:44,699 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:31:44,703 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:31:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:31:44,738 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:31:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:31:44,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048123602] [2019-12-07 13:31:44,772 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 13:31:44,772 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:31:44,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:31:44,780 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:31:44,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:31:44,990 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:31:45,208 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:31:45,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:31:45,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2019-12-07 13:31:45,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297482812] [2019-12-07 13:31:45,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:31:45,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:31:45,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:31:45,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:31:45,210 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 10 states. [2019-12-07 13:31:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:31:45,246 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-12-07 13:31:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:31:45,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2019-12-07 13:31:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:31:45,247 INFO L225 Difference]: With dead ends: 10 [2019-12-07 13:31:45,247 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 13:31:45,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:31:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 13:31:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 13:31:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 13:31:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-12-07 13:31:45,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2019-12-07 13:31:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:31:45,250 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-12-07 13:31:45,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:31:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-12-07 13:31:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:31:45,250 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:31:45,250 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2019-12-07 13:31:45,451 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:31:45,451 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 13:31:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:31:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -471213520, now seen corresponding path program 2 times [2019-12-07 13:31:45,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:31:45,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526504625] [2019-12-07 13:31:45,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:31:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:31:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:31:45,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526504625] [2019-12-07 13:31:45,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450765090] [2019-12-07 13:31:45,496 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/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 13:31:45,517 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 13:31:45,517 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:31:45,517 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 13:31:45,518 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:31:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 13:31:45,601 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:31:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 13:31:45,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:31:45,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [7] total 11 [2019-12-07 13:31:45,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531013895] [2019-12-07 13:31:45,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:31:45,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:31:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:31:45,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:31:45,622 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2019-12-07 13:31:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:31:45,669 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-12-07 13:31:45,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:31:45,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-12-07 13:31:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:31:45,670 INFO L225 Difference]: With dead ends: 9 [2019-12-07 13:31:45,670 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:31:45,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:31:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:31:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:31:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:31:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:31:45,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-12-07 13:31:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:31:45,671 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:31:45,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:31:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:31:45,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:31:45,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:31:45,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:31:45 BoogieIcfgContainer [2019-12-07 13:31:45,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:31:45,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:31:45,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:31:45,877 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:31:45,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:31:44" (3/4) ... [2019-12-07 13:31:45,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:31:45,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-12-07 13:31:45,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 13:31:45,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 13:31:45,923 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_82c1459f-b396-4945-b746-f00b53473b85/bin/utaipan/witness.graphml [2019-12-07 13:31:45,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:31:45,924 INFO L168 Benchmark]: Toolchain (without parser) took 1997.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.3 MB in the beginning and 891.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 150.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,924 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:31:45,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,925 INFO L168 Benchmark]: Boogie Preprocessor took 13.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,926 INFO L168 Benchmark]: RCFGBuilder took 163.05 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,926 INFO L168 Benchmark]: TraceAbstraction took 1556.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 893.8 MB in the end (delta: 181.3 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,927 INFO L168 Benchmark]: Witness Printer took 45.85 ms. Allocated memory is still 1.1 GB. Free memory was 893.8 MB in the beginning and 891.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:31:45,929 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.05 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1556.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 893.8 MB in the end (delta: 181.3 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.85 ms. Allocated memory is still 1.1 GB. Free memory was 893.8 MB in the beginning and 891.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 3 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 16 SDslu, 10 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 1 QuantifiedInterpolants, 2408 SizeOfPredicates, 2 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 20/33 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...