./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 09:02:33,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:33,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:33,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:33,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:33,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:33,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:33,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:33,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:33,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:33,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:33,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:33,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:33,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:33,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:33,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:33,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:33,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:33,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:33,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:33,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:33,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:33,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:33,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:33,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:33,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:33,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:33,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:33,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:33,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:33,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:33,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:33,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:33,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:33,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:33,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:33,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:33,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:33,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:33,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:33,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:33,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:02:33,379 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:33,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:33,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:33,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:33,381 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:33,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:33,382 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:02:33,383 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:02:33,383 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:02:33,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:33,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:33,383 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:33,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:33,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:33,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:33,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:33,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:33,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:33,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:33,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:33,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:33,385 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/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-10-22 09:02:33,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:33,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:33,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:33,434 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:33,435 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:33,435 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-10-22 09:02:33,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/data/f236a2d5b/65c40b98c99f4c43a97ad520a6f3b24e/FLAG6f1748d64 [2019-10-22 09:02:33,845 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:33,846 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-10-22 09:02:33,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/data/f236a2d5b/65c40b98c99f4c43a97ad520a6f3b24e/FLAG6f1748d64 [2019-10-22 09:02:34,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/data/f236a2d5b/65c40b98c99f4c43a97ad520a6f3b24e [2019-10-22 09:02:34,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:34,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:02:34,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:34,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:34,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:34,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aac3cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34, skipping insertion in model container [2019-10-22 09:02:34,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,304 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:34,318 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:34,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:34,523 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:34,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:34,550 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:34,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34 WrapperNode [2019-10-22 09:02:34,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:34,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:34,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:34,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:34,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:34,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:34,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:34,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:34,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/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 [2019-10-22 09:02:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:02:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-10-22 09:02:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-22 09:02:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-10-22 09:02:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:02:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-22 09:02:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:02:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:02:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:02:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:35,156 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:35,156 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:02:35,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35 BoogieIcfgContainer [2019-10-22 09:02:35,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:35,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:35,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:35,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:35,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:34" (1/3) ... [2019-10-22 09:02:35,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e72be65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:35, skipping insertion in model container [2019-10-22 09:02:35,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (2/3) ... [2019-10-22 09:02:35,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e72be65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:35, skipping insertion in model container [2019-10-22 09:02:35,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35" (3/3) ... [2019-10-22 09:02:35,169 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2019-10-22 09:02:35,179 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:35,186 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-10-22 09:02:35,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-10-22 09:02:35,209 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:35,210 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:02:35,210 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:35,210 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:35,210 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:35,210 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:35,211 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:35,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-10-22 09:02:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:02:35,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:35,230 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:35,232 INFO L410 AbstractCegarLoop]: === Iteration 1 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2019-10-22 09:02:35,242 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:35,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988002405] [2019-10-22 09:02:35,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:35,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988002405] [2019-10-22 09:02:35,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:35,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:35,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901975890] [2019-10-22 09:02:35,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:35,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:35,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:35,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:35,384 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2019-10-22 09:02:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:35,503 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-10-22 09:02:35,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:35,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-22 09:02:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:35,514 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:02:35,516 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 09:02:35,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 09:02:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-10-22 09:02:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-22 09:02:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2019-10-22 09:02:35,557 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2019-10-22 09:02:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:35,558 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2019-10-22 09:02:35,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2019-10-22 09:02:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:02:35,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:35,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:35,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2019-10-22 09:02:35,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:35,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25548034] [2019-10-22 09:02:35,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:35,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25548034] [2019-10-22 09:02:35,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:35,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:35,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908619676] [2019-10-22 09:02:35,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:35,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:35,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:35,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:35,622 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2019-10-22 09:02:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:35,774 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2019-10-22 09:02:35,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:35,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 09:02:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:35,777 INFO L225 Difference]: With dead ends: 56 [2019-10-22 09:02:35,778 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 09:02:35,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 09:02:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2019-10-22 09:02:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-22 09:02:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-10-22 09:02:35,793 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2019-10-22 09:02:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:35,793 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-10-22 09:02:35,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-10-22 09:02:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:35,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:35,794 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:35,794 INFO L410 AbstractCegarLoop]: === Iteration 3 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2019-10-22 09:02:35,795 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:35,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587565927] [2019-10-22 09:02:35,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:35,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587565927] [2019-10-22 09:02:35,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:35,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:35,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722021320] [2019-10-22 09:02:35,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:35,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:35,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:35,911 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2019-10-22 09:02:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,085 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-10-22 09:02:36,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:36,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 09:02:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,088 INFO L225 Difference]: With dead ends: 47 [2019-10-22 09:02:36,088 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 09:02:36,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 09:02:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 09:02:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 09:02:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-10-22 09:02:36,095 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2019-10-22 09:02:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,096 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-10-22 09:02:36,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-10-22 09:02:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:36,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,097 INFO L410 AbstractCegarLoop]: === Iteration 4 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,097 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2019-10-22 09:02:36,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078999467] [2019-10-22 09:02:36,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:36,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078999467] [2019-10-22 09:02:36,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:36,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:02:36,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113820932] [2019-10-22 09:02:36,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:36,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:36,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:36,238 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2019-10-22 09:02:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,499 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-10-22 09:02:36,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:02:36,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-22 09:02:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,505 INFO L225 Difference]: With dead ends: 72 [2019-10-22 09:02:36,505 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 09:02:36,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 09:02:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2019-10-22 09:02:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 09:02:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-10-22 09:02:36,523 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2019-10-22 09:02:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,524 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-10-22 09:02:36,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-10-22 09:02:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:02:36,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,524 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,525 INFO L410 AbstractCegarLoop]: === Iteration 5 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2019-10-22 09:02:36,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-10-22 09:02:36,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:36,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-10-22 09:02:36,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:36,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:36,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622501727] [2019-10-22 09:02:36,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:36,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:36,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:36,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:36,597 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2019-10-22 09:02:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,716 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-10-22 09:02:36,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:36,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-22 09:02:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,718 INFO L225 Difference]: With dead ends: 55 [2019-10-22 09:02:36,718 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 09:02:36,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 09:02:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-10-22 09:02:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 09:02:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2019-10-22 09:02:36,729 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2019-10-22 09:02:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,730 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-10-22 09:02:36,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2019-10-22 09:02:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:02:36,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,731 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,731 INFO L410 AbstractCegarLoop]: === Iteration 6 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:02:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2019-10-22 09:02:36,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591450737] [2019-10-22 09:02:36,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:36,813 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:36,814 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:36,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:36 BoogieIcfgContainer [2019-10-22 09:02:36,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:36,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:36,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:36,837 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:36,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35" (3/4) ... [2019-10-22 09:02:36,840 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:36,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fa9a0dec-c4a7-41b0-a9dc-e06332f1f28c/bin/uautomizer/witness.graphml [2019-10-22 09:02:36,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:36,881 INFO L168 Benchmark]: Toolchain (without parser) took 2595.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.1 MB in the beginning and 944.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 135.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,881 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:36,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,882 INFO L168 Benchmark]: Boogie Preprocessor took 31.95 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. [2019-10-22 09:02:36,883 INFO L168 Benchmark]: RCFGBuilder took 574.71 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,883 INFO L168 Benchmark]: TraceAbstraction took 1677.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.6 MB in the end (delta: 158.1 MB). Peak memory consumption was 158.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,883 INFO L168 Benchmark]: Witness Printer took 41.48 ms. Allocated memory is still 1.2 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:36,886 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.95 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 574.71 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1677.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.6 MB in the end (delta: 158.1 MB). Peak memory consumption was 158.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.48 ms. Allocated memory is still 1.2 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={1:0}, i=0] [L33] COND TRUE i < 100 VAL [b={1:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={1:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 126 SDslu, 177 SDs, 0 SdLazy, 483 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...