./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/lis_unsafe.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_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:50,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:50,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:50,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:50,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:50,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:50,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:50,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:50,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:50,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:50,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:50,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:50,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:50,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:50,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:50,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:50,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:50,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:50,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:50,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:50,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:50,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:50,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:50,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:50,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:50,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:50,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:50,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:50,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:50,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:50,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:50,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:50,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:50,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:50,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:50,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:50,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:50,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:50,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:50,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:50,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:50,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:48:50,300 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:50,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:50,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:50,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:50,313 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:50,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:50,314 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:50,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:48:50,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:50,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:50,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:50,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:48:50,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:48:50,315 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:48:50,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:50,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:48:50,316 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:48:50,316 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:48:50,317 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:50,317 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:50,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:50,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:50,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:50,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:50,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:50,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:50,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:50,320 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:48:50,321 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:48:50,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:48:50,321 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_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer 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 -> Automizer 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 -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2019-11-25 08:48:50,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:50,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:50,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:50,485 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:50,486 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:50,486 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2019-11-25 08:48:50,538 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/data/687a811c6/b00027644bf84444b5494dca44733fc7/FLAGee412c2bd [2019-11-25 08:48:51,086 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:51,087 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2019-11-25 08:48:51,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/data/687a811c6/b00027644bf84444b5494dca44733fc7/FLAGee412c2bd [2019-11-25 08:48:51,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/data/687a811c6/b00027644bf84444b5494dca44733fc7 [2019-11-25 08:48:51,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:51,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:48:51,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:51,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:51,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:51,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:51" (1/1) ... [2019-11-25 08:48:51,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6781b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:51, skipping insertion in model container [2019-11-25 08:48:51,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:51" (1/1) ... [2019-11-25 08:48:51,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:51,573 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:51,961 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 [2019-11-25 08:48:51,961 INFO L968 CHandler]: at location: C: (int*) malloc(sizeof(int) * N) [515] [2019-11-25 08:48:51,961 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:48:51,962 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 [2019-11-25 08:48:51,963 INFO L968 CHandler]: at location: C: (int*) malloc(sizeof(int) * N) [516] [2019-11-25 08:48:51,963 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:48:51,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:51,989 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-25 08:48:52,000 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:52,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:52,036 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:52,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:52,135 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:52,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52 WrapperNode [2019-11-25 08:48:52,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:52,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:52,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:52,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:52,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:52,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:52,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:52,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:52,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/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 [2019-11-25 08:48:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:48:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:48:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:48:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:48:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:48:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:48:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:48:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure lis [2019-11-25 08:48:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:48:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:48:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:48:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:48:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:48:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:48:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:48:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:48:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:48:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:48:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:48:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:48:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:48:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:48:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:48:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:48:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:48:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:48:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:48:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:48:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:48:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:48:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:48:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:48:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:48:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:48:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:48:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:48:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:48:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:48:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:48:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:48:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:48:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:48:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:48:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:48:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:48:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:48:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:48:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:48:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:48:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:48:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:48:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:48:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:48:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:48:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:48:52,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:48:52,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:48:52,338 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:48:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:48:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:48:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:48:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:48:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:48:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:48:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:48:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:48:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:48:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:48:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:48:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:48:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:48:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:48:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:48:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:48:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:48:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:48:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:48:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:48:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:48:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:48:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:48:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:48:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:48:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:48:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:48:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:48:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:48:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:48:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:48:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:48:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:48:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:48:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:48:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:48:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:48:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:48:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:48:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:48:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:48:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:48:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:48:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:48:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:48:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:48:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:48:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:48:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:48:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:48:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:48:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:48:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:48:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:48:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure lis [2019-11-25 08:48:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:48:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:48:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:48:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:48:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:48:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:48:53,318 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:53,318 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:48:53,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53 BoogieIcfgContainer [2019-11-25 08:48:53,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:53,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:53,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:53,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:53,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:51" (1/3) ... [2019-11-25 08:48:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29c494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:53, skipping insertion in model container [2019-11-25 08:48:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (2/3) ... [2019-11-25 08:48:53,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29c494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:53, skipping insertion in model container [2019-11-25 08:48:53,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53" (3/3) ... [2019-11-25 08:48:53,332 INFO L109 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2019-11-25 08:48:53,342 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:53,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2019-11-25 08:48:53,361 INFO L249 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2019-11-25 08:48:53,379 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:53,379 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:48:53,380 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:53,380 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:53,380 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:53,380 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:53,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:53,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2019-11-25 08:48:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:48:53,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:53,410 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:53,410 INFO L410 AbstractCegarLoop]: === Iteration 1 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-25 08:48:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1899922095, now seen corresponding path program 1 times [2019-11-25 08:48:53,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:53,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1879383798] [2019-11-25 08:48:53,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/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 [2019-11-25 08:48:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:53,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:53,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:53,801 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-25 08:48:53,802 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-25 08:48:53,803 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:53,812 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:53,813 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:48:53,813 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-25 08:48:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:53,841 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:53,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879383798] [2019-11-25 08:48:53,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:53,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:48:53,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547094] [2019-11-25 08:48:53,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:53,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:53,881 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2019-11-25 08:48:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:54,113 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2019-11-25 08:48:54,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:54,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:48:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:54,124 INFO L225 Difference]: With dead ends: 71 [2019-11-25 08:48:54,125 INFO L226 Difference]: Without dead ends: 68 [2019-11-25 08:48:54,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-25 08:48:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-25 08:48:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-25 08:48:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2019-11-25 08:48:54,188 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 11 [2019-11-25 08:48:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:54,189 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2019-11-25 08:48:54,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2019-11-25 08:48:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:48:54,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:54,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:54,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:54,394 INFO L410 AbstractCegarLoop]: === Iteration 2 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-25 08:48:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1899922094, now seen corresponding path program 1 times [2019-11-25 08:48:54,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:54,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1448652210] [2019-11-25 08:48:54,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/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 [2019-11-25 08:48:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,623 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_31|], 1=[|v_#valid_47|]} [2019-11-25 08:48:54,637 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:54,640 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-25 08:48:54,640 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:54,659 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:54,667 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-25 08:48:54,667 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:54,686 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:54,687 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:48:54,687 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:21 [2019-11-25 08:48:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,719 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:54,845 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-25 08:48:54,854 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-25 08:48:54,854 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:54,870 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:54,873 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:48:54,874 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:54,884 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:54,885 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:54,885 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:5 [2019-11-25 08:48:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1448652210] [2019-11-25 08:48:54,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:54,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-25 08:48:54,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348152134] [2019-11-25 08:48:54,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:48:54,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:48:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:54,949 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 8 states. [2019-11-25 08:48:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:56,031 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2019-11-25 08:48:56,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:56,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-25 08:48:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:56,035 INFO L225 Difference]: With dead ends: 166 [2019-11-25 08:48:56,035 INFO L226 Difference]: Without dead ends: 166 [2019-11-25 08:48:56,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:48:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-25 08:48:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2019-11-25 08:48:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-25 08:48:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 177 transitions. [2019-11-25 08:48:56,053 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 177 transitions. Word has length 11 [2019-11-25 08:48:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:56,054 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 177 transitions. [2019-11-25 08:48:56,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:48:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 177 transitions. [2019-11-25 08:48:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:48:56,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:56,055 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:56,258 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:56,258 INFO L410 AbstractCegarLoop]: === Iteration 3 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-25 08:48:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1898075052, now seen corresponding path program 1 times [2019-11-25 08:48:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:56,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [666437539] [2019-11-25 08:48:56,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/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 [2019-11-25 08:48:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:56,519 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:48:56,519 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:48:56,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:56,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:56 BoogieIcfgContainer [2019-11-25 08:48:56,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:56,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:56,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:56,741 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:56,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53" (3/4) ... [2019-11-25 08:48:56,743 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:48:56,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73ce762c-a7ba-4011-bfc8-13f19c634015/bin/uautomizer/witness.graphml [2019-11-25 08:48:56,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:56,778 INFO L168 Benchmark]: Toolchain (without parser) took 5268.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 939.3 MB in the beginning and 887.6 MB in the end (delta: 51.8 MB). Peak memory consumption was 216.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,779 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,780 INFO L168 Benchmark]: Boogie Preprocessor took 77.50 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. [2019-11-25 08:48:56,781 INFO L168 Benchmark]: RCFGBuilder took 1105.64 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: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,781 INFO L168 Benchmark]: TraceAbstraction took 3418.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.6 MB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,782 INFO L168 Benchmark]: Witness Printer took 37.23 ms. Allocated memory is still 1.2 GB. Free memory is still 887.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,784 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 625.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.50 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 1105.64 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: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3418.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.6 MB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 11.5 GB. * Witness Printer took 37.23 ms. Allocated memory is still 1.2 GB. Free memory is still 887.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 518]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L531] int *a; [L532] int N = __VERIFIER_nondet_int(); [L533] COND FALSE !(N < 1) VAL [N=1073741824] [L535] CALL lis(a, N) VAL [\old(N)=1073741824, a={0:0}] [L514] int *best, *prev, i, j, max = 0; [L515] best = (int*) malloc(sizeof(int) * N) [L516] prev = (int*) malloc(sizeof(int) * N) [L517] i = 0 VAL [\old(N)=1073741824, a={0:0}, a={0:0}, best={1:0}, i=0, malloc(sizeof(int) * N)={-2:0}, malloc(sizeof(int) * N)={1:0}, max=0, N=1073741824, prev={-2:0}] [L517] COND TRUE i < N VAL [\old(N)=1073741824, a={0:0}, a={0:0}, best={1:0}, i=0, malloc(sizeof(int) * N)={-2:0}, malloc(sizeof(int) * N)={1:0}, max=0, N=1073741824, prev={-2:0}] [L518] best[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 100 locations, 29 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 244 SDslu, 269 SDs, 0 SdLazy, 186 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=2, 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, 2 MinimizatonAttempts, 39 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 2100 SizeOfPredicates, 10 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...