./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/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 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:32:16,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:32:16,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:32:16,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:32:16,177 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:32:16,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:32:16,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:32:16,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:32:16,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:32:16,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:32:16,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:32:16,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:32:16,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:32:16,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:32:16,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:32:16,185 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:32:16,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:32:16,187 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:32:16,188 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:32:16,190 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:32:16,191 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:32:16,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:32:16,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:32:16,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:32:16,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:32:16,194 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:32:16,195 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:32:16,196 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:32:16,196 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:32:16,197 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:32:16,197 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:32:16,198 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:32:16,199 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:32:16,199 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:32:16,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:32:16,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:32:16,200 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-18 15:32:16,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:32:16,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:32:16,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:32:16,212 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:32:16,212 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:32:16,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:32:16,213 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:32:16,213 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:32:16,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:32:16,214 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:32:16,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:32:16,214 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 15:32:16,215 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 15:32:16,215 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 15:32:16,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:32:16,215 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:32:16,215 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:32:16,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:32:16,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:32:16,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:32:16,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:32:16,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:32:16,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:32:16,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:32:16,217 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:32:16,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:32:16,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/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 -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2018-11-18 15:32:16,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:32:16,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:32:16,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:32:16,255 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:32:16,255 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:32:16,256 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-11-18 15:32:16,310 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/data/1a76595bc/c69f3ad59a8b4a5983e23c9026733f4e/FLAGd9dd85d34 [2018-11-18 15:32:16,704 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:32:16,705 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-11-18 15:32:16,709 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/data/1a76595bc/c69f3ad59a8b4a5983e23c9026733f4e/FLAGd9dd85d34 [2018-11-18 15:32:16,720 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/data/1a76595bc/c69f3ad59a8b4a5983e23c9026733f4e [2018-11-18 15:32:16,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:32:16,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 15:32:16,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:32:16,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:32:16,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:32:16,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:16" (1/1) ... [2018-11-18 15:32:16,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3be977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:16, skipping insertion in model container [2018-11-18 15:32:16,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:16" (1/1) ... [2018-11-18 15:32:16,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:32:16,760 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:32:16,940 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:32:16,949 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:32:16,984 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:32:17,004 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:32:17,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17 WrapperNode [2018-11-18 15:32:17,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:32:17,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:32:17,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:32:17,006 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:32:17,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... [2018-11-18 15:32:17,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:32:17,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:32:17,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:32:17,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:32:17,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/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 [2018-11-18 15:32:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:32:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:32:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-18 15:32:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:32:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-18 15:32:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 15:32:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:32:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 15:32:17,574 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:32:17,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:17 BoogieIcfgContainer [2018-11-18 15:32:17,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:32:17,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:32:17,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:32:17,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:32:17,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:32:16" (1/3) ... [2018-11-18 15:32:17,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec6941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:17, skipping insertion in model container [2018-11-18 15:32:17,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:17" (2/3) ... [2018-11-18 15:32:17,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec6941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:17, skipping insertion in model container [2018-11-18 15:32:17,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:17" (3/3) ... [2018-11-18 15:32:17,588 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-11-18 15:32:17,596 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:32:17,602 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-18 15:32:17,614 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-18 15:32:17,633 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:32:17,634 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:32:17,634 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 15:32:17,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:32:17,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:32:17,645 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:32:17,646 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:32:17,646 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:32:17,646 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:32:17,658 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 15:32:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 15:32:17,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:17,667 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:17,669 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:17,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:17,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1597032710, now seen corresponding path program 1 times [2018-11-18 15:32:17,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:17,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:17,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:17,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:17,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:17,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:17,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:32:17,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:32:17,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:32:17,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:32:17,805 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-18 15:32:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:17,819 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-18 15:32:17,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:32:17,820 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 15:32:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:17,827 INFO L225 Difference]: With dead ends: 43 [2018-11-18 15:32:17,828 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 15:32:17,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:32:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 15:32:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 15:32:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 15:32:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-11-18 15:32:17,857 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 11 [2018-11-18 15:32:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:17,858 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-11-18 15:32:17,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:32:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-11-18 15:32:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 15:32:17,858 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:17,859 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:17,859 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:17,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1820883224, now seen corresponding path program 1 times [2018-11-18 15:32:17,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:17,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:17,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:17,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:17,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:32:17,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:32:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:32:17,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:32:17,941 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 3 states. [2018-11-18 15:32:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:18,044 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-11-18 15:32:18,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:32:18,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 15:32:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:18,046 INFO L225 Difference]: With dead ends: 59 [2018-11-18 15:32:18,046 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 15:32:18,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:32:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 15:32:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2018-11-18 15:32:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 15:32:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-18 15:32:18,054 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 12 [2018-11-18 15:32:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:18,054 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-18 15:32:18,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:32:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-18 15:32:18,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 15:32:18,055 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:18,055 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:18,055 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:18,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash 697121729, now seen corresponding path program 1 times [2018-11-18 15:32:18,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:18,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:18,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:18,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:18,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:18,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:32:18,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:32:18,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:32:18,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:32:18,087 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 3 states. [2018-11-18 15:32:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:18,206 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-11-18 15:32:18,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:32:18,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 15:32:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:18,209 INFO L225 Difference]: With dead ends: 55 [2018-11-18 15:32:18,209 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 15:32:18,209 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:32:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 15:32:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2018-11-18 15:32:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 15:32:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-11-18 15:32:18,213 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 13 [2018-11-18 15:32:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:18,213 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-11-18 15:32:18,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:32:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-11-18 15:32:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 15:32:18,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:18,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:18,214 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:18,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash 135937166, now seen corresponding path program 1 times [2018-11-18 15:32:18,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:18,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:18,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:18,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:18,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:18,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:32:18,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:32:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:32:18,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:32:18,555 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2018-11-18 15:32:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:18,878 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-18 15:32:18,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:32:18,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 15:32:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:18,879 INFO L225 Difference]: With dead ends: 49 [2018-11-18 15:32:18,879 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 15:32:18,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:32:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 15:32:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-11-18 15:32:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 15:32:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-18 15:32:18,883 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 14 [2018-11-18 15:32:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:18,883 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-18 15:32:18,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:32:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-18 15:32:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 15:32:18,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:18,883 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:18,884 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:18,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 135937165, now seen corresponding path program 1 times [2018-11-18 15:32:18,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:18,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:18,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:18,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:32:18,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:32:18,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:32:18,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:32:18,967 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2018-11-18 15:32:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:19,090 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-11-18 15:32:19,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:32:19,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 15:32:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:19,091 INFO L225 Difference]: With dead ends: 45 [2018-11-18 15:32:19,091 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 15:32:19,091 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:32:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 15:32:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 15:32:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:32:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-11-18 15:32:19,094 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 14 [2018-11-18 15:32:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:19,095 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-11-18 15:32:19,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:32:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-11-18 15:32:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 15:32:19,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:19,095 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:19,095 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:19,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash -497753495, now seen corresponding path program 1 times [2018-11-18 15:32:19,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:19,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:19,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:19,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:19,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:19,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:32:19,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:32:19,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:32:19,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:32:19,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:32:19,220 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2018-11-18 15:32:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:19,574 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-11-18 15:32:19,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:32:19,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-18 15:32:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:19,575 INFO L225 Difference]: With dead ends: 51 [2018-11-18 15:32:19,575 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 15:32:19,575 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:32:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 15:32:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 15:32:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:32:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-18 15:32:19,578 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 17 [2018-11-18 15:32:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:19,578 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-18 15:32:19,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:32:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-18 15:32:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 15:32:19,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:19,579 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:19,579 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:19,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1254753657, now seen corresponding path program 1 times [2018-11-18 15:32:19,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:19,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:19,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:19,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:19,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:19,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:19,704 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:19,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:19,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:19,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:32:19,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-18 15:32:19,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 15:32:19,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 15:32:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 15:32:19,797 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 9 states. [2018-11-18 15:32:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:19,995 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-11-18 15:32:19,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 15:32:19,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-18 15:32:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:19,998 INFO L225 Difference]: With dead ends: 55 [2018-11-18 15:32:19,998 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 15:32:19,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:32:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 15:32:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-18 15:32:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 15:32:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-11-18 15:32:20,002 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 19 [2018-11-18 15:32:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:20,003 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-11-18 15:32:20,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 15:32:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-11-18 15:32:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 15:32:20,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:20,004 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:20,006 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:20,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash -37851759, now seen corresponding path program 1 times [2018-11-18 15:32:20,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:20,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:20,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:20,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:20,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:20,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:20,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:20,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:20,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:20,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:32:20,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 15:32:20,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 15:32:20,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 15:32:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-18 15:32:20,607 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 12 states. [2018-11-18 15:32:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:20,787 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2018-11-18 15:32:20,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 15:32:20,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2018-11-18 15:32:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:20,789 INFO L225 Difference]: With dead ends: 68 [2018-11-18 15:32:20,789 INFO L226 Difference]: Without dead ends: 65 [2018-11-18 15:32:20,790 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-11-18 15:32:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-18 15:32:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2018-11-18 15:32:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 15:32:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2018-11-18 15:32:20,795 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 35 [2018-11-18 15:32:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:20,795 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2018-11-18 15:32:20,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 15:32:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2018-11-18 15:32:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 15:32:20,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:20,796 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:20,796 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:20,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1896571575, now seen corresponding path program 2 times [2018-11-18 15:32:20,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:20,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:20,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:20,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:20,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:21,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:21,027 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:21,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:32:21,053 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 15:32:21,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:32:21,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:21,101 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:32:21,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-11-18 15:32:21,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-18 15:32:21,110 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:32:21,116 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:32:21,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 15:32:21,119 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-11-18 15:32:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-18 15:32:21,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:32:21,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-11-18 15:32:21,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 15:32:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 15:32:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-18 15:32:21,266 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 10 states. [2018-11-18 15:32:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:21,501 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2018-11-18 15:32:21,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 15:32:21,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-11-18 15:32:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:21,503 INFO L225 Difference]: With dead ends: 72 [2018-11-18 15:32:21,503 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 15:32:21,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:32:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 15:32:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2018-11-18 15:32:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-18 15:32:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-11-18 15:32:21,505 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 41 [2018-11-18 15:32:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:21,505 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-11-18 15:32:21,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 15:32:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-11-18 15:32:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 15:32:21,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:21,506 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:21,506 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:21,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 705045250, now seen corresponding path program 1 times [2018-11-18 15:32:21,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:21,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:21,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:21,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:32:21,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:21,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:21,809 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:21,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:21,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:21,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:32:21,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-18 15:32:21,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 15:32:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 15:32:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:32:21,950 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 16 states. [2018-11-18 15:32:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:22,190 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-11-18 15:32:22,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 15:32:22,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2018-11-18 15:32:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:22,191 INFO L225 Difference]: With dead ends: 78 [2018-11-18 15:32:22,191 INFO L226 Difference]: Without dead ends: 75 [2018-11-18 15:32:22,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-11-18 15:32:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-18 15:32:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-11-18 15:32:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 15:32:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2018-11-18 15:32:22,194 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 47 [2018-11-18 15:32:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:22,194 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2018-11-18 15:32:22,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 15:32:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2018-11-18 15:32:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 15:32:22,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:22,195 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:22,196 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:22,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 379223738, now seen corresponding path program 2 times [2018-11-18 15:32:22,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:22,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:22,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:22,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:22,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:22,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:22,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:22,395 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:32:22,405 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 15:32:22,405 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:32:22,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:22,576 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 15:32:22,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-18 15:32:22,580 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 15:32:22,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-18 15:32:22,642 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:32:22,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-11-18 15:32:22,644 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:32:22,658 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:32:22,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 15:32:22,666 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2018-11-18 15:32:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-18 15:32:22,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:32:22,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2018-11-18 15:32:22,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 15:32:22,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 15:32:22,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:32:22,967 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 13 states. [2018-11-18 15:32:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:23,235 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2018-11-18 15:32:23,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 15:32:23,235 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-11-18 15:32:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:23,236 INFO L225 Difference]: With dead ends: 82 [2018-11-18 15:32:23,236 INFO L226 Difference]: Without dead ends: 79 [2018-11-18 15:32:23,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-18 15:32:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-18 15:32:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-11-18 15:32:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-18 15:32:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2018-11-18 15:32:23,240 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 53 [2018-11-18 15:32:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:23,240 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2018-11-18 15:32:23,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 15:32:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2018-11-18 15:32:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-18 15:32:23,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:23,242 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:23,242 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:23,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1004167951, now seen corresponding path program 1 times [2018-11-18 15:32:23,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:23,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:23,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:23,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:32:23,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-18 15:32:23,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:23,333 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:23,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:23,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 2 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:32:23,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:32:23,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11] total 13 [2018-11-18 15:32:23,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 15:32:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 15:32:23,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:32:23,494 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 13 states. [2018-11-18 15:32:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:23,590 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2018-11-18 15:32:23,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 15:32:23,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2018-11-18 15:32:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:23,594 INFO L225 Difference]: With dead ends: 114 [2018-11-18 15:32:23,594 INFO L226 Difference]: Without dead ends: 111 [2018-11-18 15:32:23,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-18 15:32:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-18 15:32:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2018-11-18 15:32:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-18 15:32:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2018-11-18 15:32:23,600 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 70 [2018-11-18 15:32:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:23,600 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2018-11-18 15:32:23,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 15:32:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2018-11-18 15:32:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-18 15:32:23,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:32:23,607 INFO L375 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:32:23,607 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-11-18 15:32:23,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:32:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1672025550, now seen corresponding path program 2 times [2018-11-18 15:32:23,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:32:23,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:32:23,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:23,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:32:23,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:32:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:32:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2018-11-18 15:32:23,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:32:23,882 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-11-18 15:32:23,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:32:23,929 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 15:32:23,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:32:23,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:32:24,285 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:32:24,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-18 15:32:24,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-18 15:32:24,294 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:32:24,341 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:32:24,348 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 15:32:24,349 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-18 15:32:24,471 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:32:24,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-18 15:32:24,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-18 15:32:24,484 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:32:24,488 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:32:24,504 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 15:32:24,505 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-11-18 15:32:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-11-18 15:32:25,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:32:25,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-18 15:32:25,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 15:32:25,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 15:32:25,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2018-11-18 15:32:25,131 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 9 states. [2018-11-18 15:32:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:32:36,189 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2018-11-18 15:32:36,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 15:32:36,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2018-11-18 15:32:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:32:36,190 INFO L225 Difference]: With dead ends: 118 [2018-11-18 15:32:36,190 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:32:36,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=173, Unknown=1, NotChecked=0, Total=240 [2018-11-18 15:32:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:32:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:32:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:32:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:32:36,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2018-11-18 15:32:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:32:36,191 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:32:36,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 15:32:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:32:36,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:32:36,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:32:36 BoogieIcfgContainer [2018-11-18 15:32:36,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:32:36,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:32:36,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:32:36,196 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:32:36,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:17" (3/4) ... [2018-11-18 15:32:36,199 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:32:36,203 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:32:36,203 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-11-18 15:32:36,204 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:32:36,207 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-18 15:32:36,207 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 15:32:36,207 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 15:32:36,207 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:32:36,246 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8de881ad-e94e-4c13-aeb8-060db52d86f4/bin-2019/uautomizer/witness.graphml [2018-11-18 15:32:36,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:32:36,247 INFO L168 Benchmark]: Toolchain (without parser) took 19523.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 962.3 MB in the beginning and 1.2 GB in the end (delta: -222.9 MB). Peak memory consumption was 260.1 MB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,247 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:32:36,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.73 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,248 INFO L168 Benchmark]: Boogie Preprocessor took 58.46 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,248 INFO L168 Benchmark]: RCFGBuilder took 510.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,249 INFO L168 Benchmark]: TraceAbstraction took 18619.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.1 GB in the beginning and 880.7 MB in the end (delta: 247.0 MB). Peak memory consumption was 275.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,249 INFO L168 Benchmark]: Witness Printer took 49.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Free memory was 880.7 MB in the beginning and 1.2 GB in the end (delta: -304.5 MB). Peak memory consumption was 177.6 kB. Max. memory is 11.5 GB. [2018-11-18 15:32:36,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.73 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.46 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 510.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18619.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.1 GB in the beginning and 880.7 MB in the end (delta: 247.0 MB). Peak memory consumption was 275.3 MB. Max. memory is 11.5 GB. * Witness Printer took 49.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Free memory was 880.7 MB in the beginning and 1.2 GB in the end (delta: -304.5 MB). Peak memory consumption was 177.6 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 8 error locations. SAFE Result, 18.5s OverallTime, 13 OverallIterations, 18 TraceHistogramMax, 13.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 395 SDtfs, 518 SDslu, 1404 SDs, 0 SdLazy, 935 SolverSat, 88 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 381 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 885 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 865 ConstructedInterpolants, 191 QuantifiedInterpolants, 520539 SizeOfPredicates, 8 NumberOfNonLiveVariables, 697 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 1881/2372 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...