./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_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_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/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 4ceec10d001c6e3ab8acae30cb42f114023e2890 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:54:11,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:11,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:11,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:11,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:11,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:11,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:11,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:11,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:11,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:11,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:11,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:11,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:11,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:11,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:11,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:11,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:11,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:11,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:11,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:11,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:11,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:11,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:11,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:11,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:11,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:11,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:11,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:11,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:11,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:11,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:11,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:11,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:11,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:11,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:11,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:11,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:11,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:11,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:11,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:11,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:11,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:54:11,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:11,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:11,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:11,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:11,411 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:11,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:11,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:11,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:54:11,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:11,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:11,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:11,412 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:54:11,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:54:11,414 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:11,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:11,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:11,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:11,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:11,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:11,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:11,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:11,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:11,415 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:54:11,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:54:11,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:54:11,425 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_f2203106-f2c5-4386-9130-a29a4ab9603c/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 -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2019-11-25 08:54:11,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:11,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:11,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:11,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:11,613 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:11,614 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-25 08:54:11,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/data/1ff868754/8e95677479d94137a57af3b37872e944/FLAG70086032b [2019-11-25 08:54:12,156 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:12,156 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-25 08:54:12,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/data/1ff868754/8e95677479d94137a57af3b37872e944/FLAG70086032b [2019-11-25 08:54:12,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/data/1ff868754/8e95677479d94137a57af3b37872e944 [2019-11-25 08:54:12,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:12,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:54:12,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:12,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:12,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:12,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:12" (1/1) ... [2019-11-25 08:54:12,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2117e500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:12, skipping insertion in model container [2019-11-25 08:54:12,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:12" (1/1) ... [2019-11-25 08:54:12,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:12,688 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:13,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:13,081 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:13,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:13,173 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:13,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13 WrapperNode [2019-11-25 08:54:13,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:13,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:13,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:13,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:13,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... [2019-11-25 08:54:13,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:13,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:13,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:13,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:13,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/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 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:54:13,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:54:13,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:54:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:54:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:54:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:54:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:54:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:54:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:54:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:54:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:54:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:54:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:54:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:54:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:54:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:54:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:54:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:54:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:54:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:54:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:54:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:54:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:54:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:54:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:54:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:54:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:54:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:54:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:54:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:54:13,968 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:13,969 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-25 08:54:13,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:13 BoogieIcfgContainer [2019-11-25 08:54:13,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:13,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:13,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:13,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:13,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:12" (1/3) ... [2019-11-25 08:54:13,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45749ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:13, skipping insertion in model container [2019-11-25 08:54:13,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:13" (2/3) ... [2019-11-25 08:54:13,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45749ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:13, skipping insertion in model container [2019-11-25 08:54:13,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:13" (3/3) ... [2019-11-25 08:54:13,976 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2019-11-25 08:54:13,983 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:13,988 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-25 08:54:13,998 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-25 08:54:14,016 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:14,017 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:54:14,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:14,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:14,017 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:14,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:14,017 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:14,017 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-25 08:54:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:54:14,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:14,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:14,038 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:54:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash 701891470, now seen corresponding path program 1 times [2019-11-25 08:54:14,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:14,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1767613120] [2019-11-25 08:54:14,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/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 08:54:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:14,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:54:14,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:14,431 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 08:54:14,432 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:14,455 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 08:54:14,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767613120] [2019-11-25 08:54:14,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:14,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:54:14,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808965298] [2019-11-25 08:54:14,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:54:14,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:14,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:54:14,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:14,480 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-25 08:54:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:14,630 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-25 08:54:14,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:54:14,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-25 08:54:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:14,645 INFO L225 Difference]: With dead ends: 33 [2019-11-25 08:54:14,645 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:54:14,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:54:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-25 08:54:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:54:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-25 08:54:14,676 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-11-25 08:54:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:14,677 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-25 08:54:14,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:54:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-25 08:54:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:54:14,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:14,678 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:14,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:14,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:54:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:14,890 INFO L82 PathProgramCache]: Analyzing trace with hash 283799086, now seen corresponding path program 1 times [2019-11-25 08:54:14,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:14,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [793245004] [2019-11-25 08:54:14,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/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 08:54:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:15,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:54:15,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:15,282 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-25 08:54:15,283 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-25 08:54:15,283 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:54:15,291 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:54:15,292 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 08:54:15,292 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-25 08:54:15,304 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 08:54:15,304 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:15,316 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 08:54:15,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [793245004] [2019-11-25 08:54:15,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:15,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:54:15,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657335537] [2019-11-25 08:54:15,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:54:15,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:54:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:15,319 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2019-11-25 08:54:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:15,420 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-25 08:54:15,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:54:15,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-25 08:54:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:15,421 INFO L225 Difference]: With dead ends: 28 [2019-11-25 08:54:15,421 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:54:15,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:54:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:54:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:54:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:54:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-25 08:54:15,426 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-11-25 08:54:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:15,426 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-25 08:54:15,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:54:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-25 08:54:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:54:15,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:15,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:15,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:15,632 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:54:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 283799087, now seen corresponding path program 1 times [2019-11-25 08:54:15,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:15,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1959520281] [2019-11-25 08:54:15,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/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 08:54:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:16,283 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:54:16,283 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:54:16,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:54:16,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:16 BoogieIcfgContainer [2019-11-25 08:54:16,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:16,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:16,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:16,503 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:16,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:13" (3/4) ... [2019-11-25 08:54:16,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:54:16,547 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f2203106-f2c5-4386-9130-a29a4ab9603c/bin/uautomizer/witness.graphml [2019-11-25 08:54:16,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:16,548 INFO L168 Benchmark]: Toolchain (without parser) took 3910.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 938.0 MB in the beginning and 926.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 140.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:16,549 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:16,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:16,550 INFO L168 Benchmark]: Boogie Preprocessor took 88.07 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 08:54:16,550 INFO L168 Benchmark]: RCFGBuilder took 707.67 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:16,550 INFO L168 Benchmark]: TraceAbstraction took 2532.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.4 MB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:16,551 INFO L168 Benchmark]: Witness Printer took 44.13 ms. Allocated memory is still 1.2 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:16,553 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 535.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.07 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 707.67 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2532.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.4 MB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 11.5 GB. * Witness Printer took 44.13 ms. Allocated memory is still 1.2 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={536870913:0}, __builtin_alloca (length)={1610612734:0}, arr={1610612734:0}, arr2={536870913:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={536870913:0}, __builtin_alloca (length)={1610612734:0}, arr={1610612734:0}, arr2={536870913:0}, fac=1, i=0, length=1] [L521] COND TRUE i