./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f34751565a9d43a481fab038d13037e70cdccbf .................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:41:06,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:41:06,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:41:06,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:41:06,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:41:06,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:41:06,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:41:06,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:41:06,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:41:06,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:41:06,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:41:06,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:41:06,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:41:06,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:41:06,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:41:06,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:41:06,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:41:06,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:41:06,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:41:06,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:41:06,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:41:06,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:41:06,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:41:06,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:41:06,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:41:06,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:41:06,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:41:06,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:41:06,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:41:06,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:41:06,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:41:06,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:41:06,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:41:06,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:41:06,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:41:06,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:41:06,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:41:06,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:41:06,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:41:06,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:41:06,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:41:06,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2019-11-26 02:41:06,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:41:06,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:41:06,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:41:06,932 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:41:06,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:41:06,932 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:41:06,932 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:41:06,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:41:06,933 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:41:06,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:41:06,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:41:06,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:41:06,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:41:06,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:41:06,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:41:06,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:41:06,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:41:06,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:41:06,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:41:06,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:41:06,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:41:06,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:41:06,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:41:06,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:41:06,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:41:06,937 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:41:06,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:41:06,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:41:06,938 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2019-11-26 02:41:07,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:41:07,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:41:07,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:41:07,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:41:07,094 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:41:07,095 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2019-11-26 02:41:07,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/data/1894a00e2/b6b28940b6634208ab8261121d47e737/FLAG9d750db2d [2019-11-26 02:41:07,527 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:41:07,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2019-11-26 02:41:07,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/data/1894a00e2/b6b28940b6634208ab8261121d47e737/FLAG9d750db2d [2019-11-26 02:41:07,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/data/1894a00e2/b6b28940b6634208ab8261121d47e737 [2019-11-26 02:41:07,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:41:07,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:41:07,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:41:07,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:41:07,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:41:07,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:41:07" (1/1) ... [2019-11-26 02:41:07,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522eb0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:07, skipping insertion in model container [2019-11-26 02:41:07,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:41:07" (1/1) ... [2019-11-26 02:41:07,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:41:07,983 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:41:08,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:41:08,224 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:41:08,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:41:08,251 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:41:08,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08 WrapperNode [2019-11-26 02:41:08,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:41:08,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:41:08,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:41:08,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:41:08,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:41:08,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:41:08,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:41:08,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:41:08,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... [2019-11-26 02:41:08,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:41:08,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:41:08,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:41:08,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:41:08,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/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 [2019-11-26 02:41:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:41:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:41:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:41:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:41:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:41:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:41:08,627 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:41:08,627 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:41:08,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:08 BoogieIcfgContainer [2019-11-26 02:41:08,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:41:08,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:41:08,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:41:08,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:41:08,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:41:07" (1/3) ... [2019-11-26 02:41:08,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:41:08, skipping insertion in model container [2019-11-26 02:41:08,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:08" (2/3) ... [2019-11-26 02:41:08,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:41:08, skipping insertion in model container [2019-11-26 02:41:08,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:08" (3/3) ... [2019-11-26 02:41:08,635 INFO L109 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2019-11-26 02:41:08,644 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:41:08,650 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-26 02:41:08,662 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-26 02:41:08,675 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:41:08,676 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:41:08,676 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:41:08,676 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:41:08,676 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:41:08,676 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:41:08,676 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:41:08,676 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:41:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-26 02:41:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:41:08,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:08,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:41:08,696 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:41:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2019-11-26 02:41:08,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:41:08,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1169105211] [2019-11-26 02:41:08,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:08,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:41:08,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:41:08,839 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-26 02:41:08,840 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:41:08,848 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:41:08,848 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:41:08,848 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:41:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:08,859 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:41:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:08,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1169105211] [2019-11-26 02:41:08,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:08,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:41:08,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105095603] [2019-11-26 02:41:08,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:41:08,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:41:08,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:41:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:41:08,883 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-26 02:41:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:08,947 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-26 02:41:08,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:41:08,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:41:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:08,955 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:41:08,956 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:41:08,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:41:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:41:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:41:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:41:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-26 02:41:08,980 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 3 [2019-11-26 02:41:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:08,981 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-26 02:41:08,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:41:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-26 02:41:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:41:08,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:08,981 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:41:09,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,182 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:41:09,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:09,183 INFO L82 PathProgramCache]: Analyzing trace with hash 29862, now seen corresponding path program 1 times [2019-11-26 02:41:09,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:41:09,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2016359895] [2019-11-26 02:41:09,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:09,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:41:09,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:41:09,255 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-26 02:41:09,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:41:09,265 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:41:09,265 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:41:09,266 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-26 02:41:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:09,280 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:41:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:09,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016359895] [2019-11-26 02:41:09,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:09,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:41:09,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839573925] [2019-11-26 02:41:09,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:41:09,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:41:09,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:41:09,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:41:09,323 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2019-11-26 02:41:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:09,358 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:41:09,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:41:09,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-26 02:41:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:09,360 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:41:09,360 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:41:09,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:41:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:41:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:41:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:41:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:41:09,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2019-11-26 02:41:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:09,364 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:41:09,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:41:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:41:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:41:09,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:09,365 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:41:09,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,570 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:41:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash 889571657, now seen corresponding path program 1 times [2019-11-26 02:41:09,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:41:09,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [79138890] [2019-11-26 02:41:09,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:09,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:41:09,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:41:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:09,651 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:41:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:09,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [79138890] [2019-11-26 02:41:09,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:09,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2019-11-26 02:41:09,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787081976] [2019-11-26 02:41:09,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:41:09,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:41:09,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:41:09,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:41:09,666 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2019-11-26 02:41:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:09,691 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 02:41:09,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:41:09,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 02:41:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:09,694 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:41:09,694 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:41:09,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:41:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:41:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:41:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:41:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:41:09,696 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-11-26 02:41:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:09,697 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:41:09,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:41:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:41:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:41:09,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:09,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:41:09,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,898 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:41:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash 179872428, now seen corresponding path program 1 times [2019-11-26 02:41:09,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:41:09,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1576615985] [2019-11-26 02:41:09,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:09,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:41:09,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:41:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:10,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:41:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:12,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1576615985] [2019-11-26 02:41:12,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:12,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:41:12,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365950824] [2019-11-26 02:41:12,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:41:12,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:41:12,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:41:12,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2019-11-26 02:41:12,058 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-11-26 02:41:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:12,146 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-26 02:41:12,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:41:12,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-26 02:41:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:12,148 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:41:12,148 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:41:12,148 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=16, Invalid=25, Unknown=1, NotChecked=0, Total=42 [2019-11-26 02:41:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:41:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:41:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:41:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:41:12,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-26 02:41:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:12,149 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:41:12,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:41:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:41:12,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:41:12,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:41:12,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:41:12 BoogieIcfgContainer [2019-11-26 02:41:12,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:41:12,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:41:12,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:41:12,355 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:41:12,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:08" (3/4) ... [2019-11-26 02:41:12,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:41:12,368 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:41:12,369 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:41:12,369 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:41:12,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4c779e9c-66b6-434a-9ebc-be9eadcb587d/bin/utaipan/witness.graphml [2019-11-26 02:41:12,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:41:12,405 INFO L168 Benchmark]: Toolchain (without parser) took 4447.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -76.5 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:12,405 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:41:12,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:12,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:41:12,406 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:41:12,407 INFO L168 Benchmark]: RCFGBuilder took 323.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:12,407 INFO L168 Benchmark]: TraceAbstraction took 3725.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:12,408 INFO L168 Benchmark]: Witness Printer took 49.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:12,410 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 323.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3725.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 11.5 GB. * Witness Printer took 49.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 10 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 59 SDslu, 13 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 1 QuantifiedInterpolants, 1066 SizeOfPredicates, 9 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 correct! Received shutdown request...