./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/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 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:32:09,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:32:09,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:32:09,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:32:09,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:32:09,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:32:09,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:32:09,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:32:09,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:32:09,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:32:09,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:32:09,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:32:09,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:32:09,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:32:09,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:32:09,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:32:09,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:32:09,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:32:09,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:32:09,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:32:09,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:32:09,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:32:09,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:32:09,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:32:09,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:32:09,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:32:09,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:32:09,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:32:09,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:32:09,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:32:09,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:32:09,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:32:09,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:32:09,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:32:09,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:32:09,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:32:09,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:32:09,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:32:09,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:32:09,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:32:09,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:32:09,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:32:09,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:32:09,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:32:09,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:32:09,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:32:09,441 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:32:09,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:32:09,442 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:32:09,443 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:32:09,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:32:09,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:32:09,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:32:09,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:32:09,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:32:09,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:32:09,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:32:09,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:32:09,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:32:09,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:32:09,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3feadb02-df92-489b-93cd-ef475799e1d7/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 -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2019-12-07 18:32:09,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:32:09,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:32:09,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:32:09,562 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:32:09,562 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:32:09,563 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-12-07 18:32:09,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/data/c01fc77b8/79742ce1fc2a4e959a1eb5af696cbea4/FLAG9190b7803 [2019-12-07 18:32:10,054 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:32:10,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-12-07 18:32:10,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/data/c01fc77b8/79742ce1fc2a4e959a1eb5af696cbea4/FLAG9190b7803 [2019-12-07 18:32:10,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/data/c01fc77b8/79742ce1fc2a4e959a1eb5af696cbea4 [2019-12-07 18:32:10,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:32:10,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:32:10,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:32:10,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:32:10,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:32:10,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dff57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10, skipping insertion in model container [2019-12-07 18:32:10,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:32:10,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:32:10,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:32:10,318 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:32:10,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:32:10,379 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:32:10,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10 WrapperNode [2019-12-07 18:32:10,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:32:10,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:32:10,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:32:10,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:32:10,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... [2019-12-07 18:32:10,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:32:10,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:32:10,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:32:10,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:32:10,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/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 [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:32:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:32:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:32:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:32:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:32:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:32:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:32:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:32:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:32:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:32:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:32:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:32:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:32:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:32:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:32:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:32:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:32:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:32:10,714 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:32:10,714 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:32:10,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:32:10 BoogieIcfgContainer [2019-12-07 18:32:10,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:32:10,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:32:10,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:32:10,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:32:10,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:32:10" (1/3) ... [2019-12-07 18:32:10,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c58c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:32:10, skipping insertion in model container [2019-12-07 18:32:10,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:32:10" (2/3) ... [2019-12-07 18:32:10,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c58c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:32:10, skipping insertion in model container [2019-12-07 18:32:10,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:32:10" (3/3) ... [2019-12-07 18:32:10,719 INFO L109 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2019-12-07 18:32:10,726 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:32:10,730 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-12-07 18:32:10,738 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-12-07 18:32:10,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:32:10,750 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:32:10,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:32:10,750 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:32:10,751 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:32:10,751 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:32:10,751 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:32:10,751 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:32:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-12-07 18:32:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:32:10,766 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:32:10,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:32:10,767 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:32:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:32:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2019-12-07 18:32:10,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:32:10,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876079501] [2019-12-07 18:32:10,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:32:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:32:10,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876079501] [2019-12-07 18:32:10,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:32:10,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:32:10,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870437967] [2019-12-07 18:32:10,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:32:10,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:32:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:32:10,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:32:10,912 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2019-12-07 18:32:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:32:10,991 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-12-07 18:32:10,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:32:10,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:32:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:32:10,998 INFO L225 Difference]: With dead ends: 38 [2019-12-07 18:32:10,998 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 18:32:10,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:32:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 18:32:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-12-07 18:32:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 18:32:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-12-07 18:32:11,022 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2019-12-07 18:32:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:32:11,022 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-12-07 18:32:11,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:32:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-12-07 18:32:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:32:11,023 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:32:11,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:32:11,023 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:32:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:32:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2019-12-07 18:32:11,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:32:11,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473296002] [2019-12-07 18:32:11,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:32:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:32:11,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473296002] [2019-12-07 18:32:11,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:32:11,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:32:11,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776226032] [2019-12-07 18:32:11,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:32:11,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:32:11,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:32:11,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:32:11,067 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2019-12-07 18:32:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:32:11,124 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-12-07 18:32:11,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:32:11,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:32:11,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:32:11,125 INFO L225 Difference]: With dead ends: 29 [2019-12-07 18:32:11,125 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:32:11,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:32:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:32:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:32:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:32:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-12-07 18:32:11,128 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 11 [2019-12-07 18:32:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:32:11,128 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-12-07 18:32:11,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:32:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-12-07 18:32:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:32:11,129 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:32:11,129 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:32:11,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:32:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:32:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash 184525091, now seen corresponding path program 1 times [2019-12-07 18:32:11,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:32:11,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527661255] [2019-12-07 18:32:11,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:32:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:32:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:32:11,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527661255] [2019-12-07 18:32:11,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:32:11,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:32:11,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728013485] [2019-12-07 18:32:11,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:32:11,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:32:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:32:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:32:11,168 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2019-12-07 18:32:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:32:11,214 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-12-07 18:32:11,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:32:11,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:32:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:32:11,215 INFO L225 Difference]: With dead ends: 34 [2019-12-07 18:32:11,215 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 18:32:11,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:32:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 18:32:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-12-07 18:32:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:32:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-12-07 18:32:11,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 11 [2019-12-07 18:32:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:32:11,219 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-12-07 18:32:11,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:32:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-12-07 18:32:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:32:11,219 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:32:11,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:32:11,220 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:32:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:32:11,220 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2019-12-07 18:32:11,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:32:11,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857492458] [2019-12-07 18:32:11,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:32:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:32:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:32:11,256 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:32:11,256 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:32:11,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:32:11 BoogieIcfgContainer [2019-12-07 18:32:11,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:32:11,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:32:11,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:32:11,271 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:32:11,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:32:10" (3/4) ... [2019-12-07 18:32:11,273 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:32:11,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3feadb02-df92-489b-93cd-ef475799e1d7/bin/uautomizer/witness.graphml [2019-12-07 18:32:11,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:32:11,300 INFO L168 Benchmark]: Toolchain (without parser) took 1224.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 936.6 MB in the beginning and 955.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,301 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:32:11,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,302 INFO L168 Benchmark]: Boogie Preprocessor took 35.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,302 INFO L168 Benchmark]: RCFGBuilder took 298.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,302 INFO L168 Benchmark]: TraceAbstraction took 554.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 957.1 MB in the end (delta: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,303 INFO L168 Benchmark]: Witness Printer took 28.49 ms. Allocated memory is still 1.1 GB. Free memory was 957.1 MB in the beginning and 955.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:32:11,305 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 298.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 554.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 957.1 MB in the end (delta: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. * Witness Printer took 28.49 ms. Allocated memory is still 1.1 GB. Free memory was 957.1 MB in the beginning and 955.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. 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 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={2:0}, a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 104 SDslu, 37 SDs, 0 SdLazy, 150 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...