./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/duplets.c --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_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/duplets.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/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 c261d11d6e37ef6eda45455c8074b5a0eac3352b ..................................................................................................................................................................................................................................................................................................... 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 08:58:28,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:58:28,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:58:28,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:58:28,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:58:28,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:58:28,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:58:28,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:58:28,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:58:28,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:58:28,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:58:28,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:58:28,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:58:28,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:58:28,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:58:28,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:58:28,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:58:28,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:58:28,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:58:28,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:58:28,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:58:28,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:58:28,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:58:28,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:58:28,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:58:28,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:58:28,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:58:28,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:58:28,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:58:28,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:58:28,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:58:28,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:58:28,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:58:28,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:58:28,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:58:28,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:58:28,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:58:28,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:58:28,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:58:28,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:58:28,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:58:28,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:58:28,220 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:58:28,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:58:28,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:58:28,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:58:28,222 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:58:28,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:58:28,222 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:58:28,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:58:28,223 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:58:28,224 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:58:28,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:58:28,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:58:28,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:58:28,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:58:28,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:28,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:58:28,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:58:28,226 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:58:28,226 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:58:28,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:58:28,226 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_0b94757a-2b92-40db-aec0-a70ec8e8abc1/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 -> c261d11d6e37ef6eda45455c8074b5a0eac3352b [2019-11-25 08:58:28,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:58:28,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:58:28,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:58:28,376 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:58:28,377 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:58:28,377 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/../../sv-benchmarks/c/verifythis/duplets.c [2019-11-25 08:58:28,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/data/3bb5cf7d5/01966f1a121a48e7afdb19364ef09d48/FLAG26e651f33 [2019-11-25 08:58:28,819 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:58:28,820 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/sv-benchmarks/c/verifythis/duplets.c [2019-11-25 08:58:28,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/data/3bb5cf7d5/01966f1a121a48e7afdb19364ef09d48/FLAG26e651f33 [2019-11-25 08:58:29,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/data/3bb5cf7d5/01966f1a121a48e7afdb19364ef09d48 [2019-11-25 08:58:29,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:58:29,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:58:29,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:29,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:58:29,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:58:29,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3c2ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29, skipping insertion in model container [2019-11-25 08:58:29,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:58:29,191 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:29,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:29,365 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:58:29,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:29,473 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:58:29,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29 WrapperNode [2019-11-25 08:58:29,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:29,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:58:29,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:58:29,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:58:29,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... [2019-11-25 08:58:29,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:58:29,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:58:29,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:58:29,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:58:29,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/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 08:58:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:58:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:58:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-25 08:58:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2019-11-25 08:58:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2019-11-25 08:58:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:58:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-25 08:58:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:58:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:58:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-25 08:58:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:58:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:58:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:58:30,193 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:58:30,193 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-25 08:58:30,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:30 BoogieIcfgContainer [2019-11-25 08:58:30,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:58:30,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:58:30,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:58:30,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:58:30,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:58:29" (1/3) ... [2019-11-25 08:58:30,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cff0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:30, skipping insertion in model container [2019-11-25 08:58:30,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:29" (2/3) ... [2019-11-25 08:58:30,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cff0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:30, skipping insertion in model container [2019-11-25 08:58:30,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:30" (3/3) ... [2019-11-25 08:58:30,202 INFO L109 eAbstractionObserver]: Analyzing ICFG duplets.c [2019-11-25 08:58:30,212 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:58:30,223 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 36 error locations. [2019-11-25 08:58:30,236 INFO L249 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2019-11-25 08:58:30,265 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:58:30,266 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:58:30,266 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:58:30,266 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:58:30,266 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:58:30,266 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:58:30,266 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:58:30,267 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:58:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2019-11-25 08:58:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:58:30,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:30,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:30,310 INFO L410 AbstractCegarLoop]: === Iteration 1 === [finddupErr1REQUIRES_VIOLATION, finddupErr6REQUIRES_VIOLATION, finddupErr7REQUIRES_VIOLATION, finddupErr5REQUIRES_VIOLATION, finddupErr0REQUIRES_VIOLATION, finddupErr4REQUIRES_VIOLATION, finddupErr2REQUIRES_VIOLATION, finddupErr3REQUIRES_VIOLATION, mkdupErr0REQUIRES_VIOLATION, mkdupErr1REQUIRES_VIOLATION, mkdupErr3REQUIRES_VIOLATION, mkdupErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr23ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-25 08:58:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:30,316 INFO L82 PathProgramCache]: Analyzing trace with hash -115732399, now seen corresponding path program 1 times [2019-11-25 08:58:30,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:30,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1113444433] [2019-11-25 08:58:30,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/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 08:58:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:30,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:58:30,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:30,524 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 [2019-11-25 08:58:30,525 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:30,533 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:30,534 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:58:30,534 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:58:30,605 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 08:58:30,606 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:30,633 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 08:58:30,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1113444433] [2019-11-25 08:58:30,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:30,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-25 08:58:30,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036159541] [2019-11-25 08:58:30,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:58:30,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:58:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:58:30,655 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 7 states. [2019-11-25 08:58:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:31,196 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2019-11-25 08:58:31,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:58:31,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-25 08:58:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:31,207 INFO L225 Difference]: With dead ends: 101 [2019-11-25 08:58:31,207 INFO L226 Difference]: Without dead ends: 98 [2019-11-25 08:58:31,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:58:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-25 08:58:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-11-25 08:58:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-25 08:58:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2019-11-25 08:58:31,288 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 14 [2019-11-25 08:58:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:31,288 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2019-11-25 08:58:31,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:58:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2019-11-25 08:58:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:58:31,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:31,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:31,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:31,493 INFO L410 AbstractCegarLoop]: === Iteration 2 === [finddupErr1REQUIRES_VIOLATION, finddupErr6REQUIRES_VIOLATION, finddupErr7REQUIRES_VIOLATION, finddupErr5REQUIRES_VIOLATION, finddupErr0REQUIRES_VIOLATION, finddupErr4REQUIRES_VIOLATION, finddupErr2REQUIRES_VIOLATION, finddupErr3REQUIRES_VIOLATION, mkdupErr0REQUIRES_VIOLATION, mkdupErr1REQUIRES_VIOLATION, mkdupErr3REQUIRES_VIOLATION, mkdupErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr23ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-25 08:58:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:31,494 INFO L82 PathProgramCache]: Analyzing trace with hash -115732398, now seen corresponding path program 1 times [2019-11-25 08:58:31,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:31,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1848795711] [2019-11-25 08:58:31,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/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 08:58:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:31,684 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:58:31,684 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:58:31,885 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:31,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:58:31 BoogieIcfgContainer [2019-11-25 08:58:31,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:58:31,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:31,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:31,906 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:31,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:30" (3/4) ... [2019-11-25 08:58:31,908 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:58:31,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0b94757a-2b92-40db-aec0-a70ec8e8abc1/bin/uautomizer/witness.graphml [2019-11-25 08:58:31,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:31,947 INFO L168 Benchmark]: Toolchain (without parser) took 2787.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.8 MB in the beginning and 998.1 MB in the end (delta: -53.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:31,947 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 08:58:31,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:31,948 INFO L168 Benchmark]: Boogie Preprocessor took 46.14 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 08:58:31,949 INFO L168 Benchmark]: RCFGBuilder took 673.82 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:31,950 INFO L168 Benchmark]: TraceAbstraction took 1709.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.1 MB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:31,950 INFO L168 Benchmark]: Witness Printer took 40.55 ms. Allocated memory is still 1.2 GB. Free memory is still 998.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:31,953 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 313.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.14 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 673.82 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1709.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.1 MB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.55 ms. Allocated memory is still 1.2 GB. Free memory is still 998.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L44] int n = __VERIFIER_nondet_int(); [L47] EXPR, FCALL calloc(n, sizeof(int)) VAL [calloc(n, sizeof(int))={1:0}, n=536870913] [L47] int *a = calloc(n, sizeof(int)); VAL [a={1:0}, calloc(n, sizeof(int))={1:0}, n=536870913] [L49] CALL mkdup(a, n) VAL [\old(n)=536870913, a={1:0}] [L15] int i = __VERIFIER_nondet_int(); [L16] int j = __VERIFIER_nondet_int(); [L22] int x = __VERIFIER_nondet_int(); [L24] a[i] = x - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 106 locations, 36 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 136 SDslu, 150 SDs, 0 SdLazy, 199 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 3 QuantifiedInterpolants, 1339 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...