./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 ca8443f02e84c43442a8563176ea0a68cc82ac31 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:12:55,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:12:55,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:12:55,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:12:55,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:12:55,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:12:55,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:12:55,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:12:55,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:12:55,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:12:55,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:12:55,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:12:55,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:12:55,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:12:55,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:12:55,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:12:55,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:12:55,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:12:55,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:12:55,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:12:55,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:12:55,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:12:55,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:12:55,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:12:55,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:12:55,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:12:55,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:12:55,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:12:55,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:12:55,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:12:55,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:12:55,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:12:55,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:12:55,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:12:55,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:12:55,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:12:55,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:12:55,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:12:55,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:12:55,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:12:55,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:12:55,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:12:55,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:12:55,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:12:55,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:12:55,373 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:12:55,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:12:55,373 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:12:55,373 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:12:55,373 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:12:55,374 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:12:55,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:12:55,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:12:55,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:12:55,375 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:12:55,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:12:55,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:12:55,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:12:55,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:12:55,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:12:55,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:55,377 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:12:55,377 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:12:55,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:12:55,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:12:55,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:12:55,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:12:55,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:12:55,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:12:55,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:12:55,379 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:12:55,379 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:12:55,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:12:55,379 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_35a85067-20a4-4366-afb8-3931cbb09dfb/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 -> ca8443f02e84c43442a8563176ea0a68cc82ac31 [2019-11-26 02:12:55,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:12:55,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:12:55,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:12:55,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:12:55,522 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:12:55,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2019-11-26 02:12:55,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/data/bbdab67ae/2d4bd76b6965468c92214ea24624092a/FLAG13853fe74 [2019-11-26 02:12:56,000 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:12:56,000 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2019-11-26 02:12:56,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/data/bbdab67ae/2d4bd76b6965468c92214ea24624092a/FLAG13853fe74 [2019-11-26 02:12:56,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/data/bbdab67ae/2d4bd76b6965468c92214ea24624092a [2019-11-26 02:12:56,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:12:56,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:12:56,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:12:56,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:12:56,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:12:56,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:12:56" (1/1) ... [2019-11-26 02:12:56,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceb65e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:56, skipping insertion in model container [2019-11-26 02:12:56,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:12:56" (1/1) ... [2019-11-26 02:12:56,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:12:56,374 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:12:56,785 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,786 INFO L968 CHandler]: at location: C: (struct ldv_msg*)ldv_malloc(sizeof(struct ldv_msg)) [576] [2019-11-26 02:12:56,786 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,807 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,808 INFO L968 CHandler]: at location: C: (typeof(*msg) *)( (char *)__mptr - ((size_t) &((typeof(*msg) *)0)->list) ) [607] [2019-11-26 02:12:56,808 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,812 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,812 INFO L968 CHandler]: at location: C: (typeof(*(msg)) *)( (char *)__mptr - ((size_t) &((typeof(*(msg)) *)0)->list) ) [607] [2019-11-26 02:12:56,812 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,815 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,816 INFO L968 CHandler]: at location: C: (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) ) [607] [2019-11-26 02:12:56,816 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,849 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,849 INFO L968 CHandler]: at location: C: (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) ) [706] [2019-11-26 02:12:56,849 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,856 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:12:56,857 INFO L968 CHandler]: at location: C: (int *)ldv_malloc(sizeof(int)) [758] [2019-11-26 02:12:56,857 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:12:56,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:12:56,876 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 02:12:56,883 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:12:56,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:12:56,952 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:12:56,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:12:57,080 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:12:57,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57 WrapperNode [2019-11-26 02:12:57,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:12:57,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:12:57,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:12:57,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:12:57,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:12:57,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:12:57,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:12:57,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:12:57,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... [2019-11-26 02:12:57,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:12:57,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:12:57,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:12:57,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:12:57,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 02:12:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:12:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:12:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:12:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-26 02:12:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:12:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:12:57,489 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:12:57,489 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-26 02:12:57,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:12:57 BoogieIcfgContainer [2019-11-26 02:12:57,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:12:57,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:12:57,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:12:57,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:12:57,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:12:56" (1/3) ... [2019-11-26 02:12:57,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aca53ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:12:57, skipping insertion in model container [2019-11-26 02:12:57,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:12:57" (2/3) ... [2019-11-26 02:12:57,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aca53ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:12:57, skipping insertion in model container [2019-11-26 02:12:57,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:12:57" (3/3) ... [2019-11-26 02:12:57,496 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test1-2.i [2019-11-26 02:12:57,504 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:12:57,509 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-26 02:12:57,519 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-26 02:12:57,536 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:12:57,536 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:12:57,536 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:12:57,536 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:12:57,536 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:12:57,537 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:12:57,537 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:12:57,537 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:12:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-26 02:12:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:12:57,551 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:12:57,552 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:12:57,553 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:12:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:12:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times [2019-11-26 02:12:57,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:12:57,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2075127838] [2019-11-26 02:12:57,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 02:12:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:12:57,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:12:57,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:12:57,715 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 02:12:57,715 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:12:57,721 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 02:12:57,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2075127838] [2019-11-26 02:12:57,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:12:57,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:12:57,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386030122] [2019-11-26 02:12:57,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:12:57,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:12:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:12:57,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:12:57,736 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-11-26 02:12:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:12:57,782 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-26 02:12:57,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:12:57,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-26 02:12:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:12:57,791 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:12:57,792 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:12:57,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:12:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:12:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:12:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:12:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-26 02:12:57,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2019-11-26 02:12:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:12:57,826 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-26 02:12:57,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:12:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-26 02:12:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:12:57,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:12:57,827 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:12:58,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:58,031 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:12:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:12:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash 889508680, now seen corresponding path program 1 times [2019-11-26 02:12:58,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:12:58,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [357913822] [2019-11-26 02:12:58,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 02:12:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:12:58,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:12:58,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:12:58,187 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 02:12:58,187 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:12:58,212 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 02:12:58,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [357913822] [2019-11-26 02:12:58,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:12:58,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-26 02:12:58,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137754798] [2019-11-26 02:12:58,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:12:58,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:12:58,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:12:58,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:12:58,215 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2019-11-26 02:12:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:12:58,280 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:12:58,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:12:58,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2019-11-26 02:12:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:12:58,281 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:12:58,282 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:12:58,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:12:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:12:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:12:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:12:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:12:58,285 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2019-11-26 02:12:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:12:58,285 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:12:58,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:12:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:12:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:12:58,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:12:58,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:12:58,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:58,487 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:12:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:12:58,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965349, now seen corresponding path program 1 times [2019-11-26 02:12:58,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:12:58,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [968078802] [2019-11-26 02:12:58,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 02:12:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:12:58,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:12:58,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:12:58,616 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 02:12:58,617 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:12:58,620 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:12:58,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:12:58,621 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:12:58,637 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 02:12:58,637 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:12:58,641 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 02:12:58,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [968078802] [2019-11-26 02:12:58,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:12:58,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:12:58,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621623251] [2019-11-26 02:12:58,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:12:58,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:12:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:12:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:12:58,643 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2019-11-26 02:12:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:12:58,712 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-26 02:12:58,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:12:58,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:12:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:12:58,713 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:12:58,713 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:12:58,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:12:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:12:58,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:12:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:12:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-26 02:12:58,717 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2019-11-26 02:12:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:12:58,719 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-26 02:12:58,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:12:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-26 02:12:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:12:58,720 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:12:58,720 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:12:58,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:58,921 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:12:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:12:58,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812391, now seen corresponding path program 1 times [2019-11-26 02:12:58,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:12:58,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2129779691] [2019-11-26 02:12:58,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/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 02:12:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:12:58,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:12:58,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:12:58,989 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 02:12:58,989 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:12:58,990 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 02:12:58,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2129779691] [2019-11-26 02:12:58,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:12:58,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:12:58,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140595205] [2019-11-26 02:12:58,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:12:58,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:12:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:12:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:12:58,991 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2019-11-26 02:12:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:12:59,035 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-11-26 02:12:59,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:12:59,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:12:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:12:59,036 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:12:59,037 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 02:12:59,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:12:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 02:12:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-26 02:12:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:12:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-26 02:12:59,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2019-11-26 02:12:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:12:59,040 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-26 02:12:59,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:12:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-26 02:12:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:12:59,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:12:59,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:12:59,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:59,244 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:12:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:12:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787124, now seen corresponding path program 1 times [2019-11-26 02:12:59,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:12:59,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1622039565] [2019-11-26 02:12:59,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:12:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:12:59,378 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:12:59,378 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:12:59,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:12:59,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:12:59 BoogieIcfgContainer [2019-11-26 02:12:59,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:12:59,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:12:59,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:12:59,599 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:12:59,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:12:57" (3/4) ... [2019-11-26 02:12:59,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:12:59,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_35a85067-20a4-4366-afb8-3931cbb09dfb/bin/utaipan/witness.graphml [2019-11-26 02:12:59,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:12:59,642 INFO L168 Benchmark]: Toolchain (without parser) took 3341.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 968.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 121.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,643 INFO L168 Benchmark]: CDTParser took 0.17 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 02:12:59,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.82 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,644 INFO L168 Benchmark]: Boogie Preprocessor took 21.29 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 02:12:59,645 INFO L168 Benchmark]: RCFGBuilder took 332.09 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,645 INFO L168 Benchmark]: TraceAbstraction took 2107.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.3 MB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,646 INFO L168 Benchmark]: Witness Printer took 42.08 ms. Allocated memory is still 1.2 GB. Free memory was 974.3 MB in the beginning and 968.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:12:59,650 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 778.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.82 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.29 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 332.09 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2107.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.3 MB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. * Witness Printer took 42.08 ms. Allocated memory is still 1.2 GB. Free memory was 974.3 MB in the beginning and 968.9 MB 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: - CounterExampleResult [Line: 760]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={8388611:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={8388611:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] free(p) VAL [ldv_global_msg_list={8388611:0}] [L759] free(p) VAL [ldv_global_msg_list={8388611:0}] [L759] free(p) [L760] free(p) VAL [ldv_global_msg_list={8388611:0}] [L760] free(p) VAL [ldv_global_msg_list={8388611:0}] [L760] free(p) VAL [ldv_global_msg_list={8388611:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 7 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 62 SDslu, 28 SDs, 0 SdLazy, 61 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 782 SizeOfPredicates, 8 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 16 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 incorrect! Received shutdown request...