./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 06:30:53,228 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 06:30:53,229 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 06:30:53,237 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 06:30:53,238 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 06:30:53,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 06:30:53,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 06:30:53,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 06:30:53,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 06:30:53,242 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 06:30:53,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 06:30:53,243 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 06:30:53,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 06:30:53,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 06:30:53,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 06:30:53,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 06:30:53,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 06:30:53,247 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 06:30:53,248 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 06:30:53,249 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 06:30:53,250 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 06:30:53,251 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 06:30:53,252 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 06:30:53,253 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 06:30:53,253 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 06:30:53,254 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 06:30:53,254 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 06:30:53,255 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 06:30:53,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 06:30:53,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 06:30:53,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 06:30:53,257 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 06:30:53,257 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 06:30:53,257 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 06:30:53,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 06:30:53,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 06:30:53,258 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-09 06:30:53,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 06:30:53,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 06:30:53,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 06:30:53,269 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 06:30:53,269 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 06:30:53,269 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 06:30:53,269 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 06:30:53,269 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 06:30:53,270 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 06:30:53,271 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:30:53,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 06:30:53,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 06:30:53,272 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_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 -> 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 [2018-12-09 06:30:53,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 06:30:53,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 06:30:53,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 06:30:53,306 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 06:30:53,306 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 06:30:53,307 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c [2018-12-09 06:30:53,350 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/data/c0837845d/a4bccef6a7b84f3b9a323619dccf686c/FLAG6261f4161 [2018-12-09 06:30:53,752 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 06:30:53,753 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c [2018-12-09 06:30:53,756 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/data/c0837845d/a4bccef6a7b84f3b9a323619dccf686c/FLAG6261f4161 [2018-12-09 06:30:53,764 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/data/c0837845d/a4bccef6a7b84f3b9a323619dccf686c [2018-12-09 06:30:53,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 06:30:53,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-09 06:30:53,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 06:30:53,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 06:30:53,769 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 06:30:53,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5a6cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53, skipping insertion in model container [2018-12-09 06:30:53,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 06:30:53,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 06:30:53,868 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:30:53,876 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 06:30:53,885 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:30:53,895 INFO L195 MainTranslator]: Completed translation [2018-12-09 06:30:53,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53 WrapperNode [2018-12-09 06:30:53,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 06:30:53,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 06:30:53,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 06:30:53,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 06:30:53,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... [2018-12-09 06:30:53,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 06:30:53,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 06:30:53,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 06:30:53,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 06:30:53,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 06:30:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 06:30:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 06:30:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2018-12-09 06:30:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-09 06:30:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-09 06:30:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 06:30:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 06:30:54,110 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 06:30:54,111 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 06:30:54,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:54 BoogieIcfgContainer [2018-12-09 06:30:54,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 06:30:54,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 06:30:54,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 06:30:54,114 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 06:30:54,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:30:53" (1/3) ... [2018-12-09 06:30:54,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a7794c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:30:54, skipping insertion in model container [2018-12-09 06:30:54,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:53" (2/3) ... [2018-12-09 06:30:54,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a7794c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:30:54, skipping insertion in model container [2018-12-09 06:30:54,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:54" (3/3) ... [2018-12-09 06:30:54,116 INFO L112 eAbstractionObserver]: Analyzing ICFG realloc1_false-valid-deref.c [2018-12-09 06:30:54,122 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 06:30:54,127 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-09 06:30:54,137 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-09 06:30:54,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 06:30:54,152 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 06:30:54,152 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 06:30:54,152 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 06:30:54,152 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 06:30:54,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 06:30:54,153 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 06:30:54,153 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 06:30:54,153 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 06:30:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-09 06:30:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 06:30:54,167 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,168 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,169 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581223, now seen corresponding path program 1 times [2018-12-09 06:30:54,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:30:54,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 06:30:54,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:30:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:30:54,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:30:54,273 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-12-09 06:30:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,299 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-12-09 06:30:54,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:30:54,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 06:30:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,307 INFO L225 Difference]: With dead ends: 37 [2018-12-09 06:30:54,307 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 06:30:54,308 INFO L631 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 [2018-12-09 06:30:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 06:30:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-12-09 06:30:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 06:30:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-12-09 06:30:54,328 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2018-12-09 06:30:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,328 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-12-09 06:30:54,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:30:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-12-09 06:30:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 06:30:54,329 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,329 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,329 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581277, now seen corresponding path program 1 times [2018-12-09 06:30:54,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:30:54,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:30:54,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:30:54,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:30:54,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:30:54,357 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 3 states. [2018-12-09 06:30:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,385 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-09 06:30:54,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:30:54,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 06:30:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,386 INFO L225 Difference]: With dead ends: 30 [2018-12-09 06:30:54,386 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 06:30:54,386 INFO L631 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 [2018-12-09 06:30:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 06:30:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-12-09 06:30:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 06:30:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 06:30:54,389 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2018-12-09 06:30:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,389 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 06:30:54,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:30:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 06:30:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 06:30:54,389 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,389 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,389 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581278, now seen corresponding path program 1 times [2018-12-09 06:30:54,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:30:54,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:30:54,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:30:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:30:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:30:54,422 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-12-09 06:30:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,444 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-12-09 06:30:54,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:30:54,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 06:30:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,445 INFO L225 Difference]: With dead ends: 30 [2018-12-09 06:30:54,445 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 06:30:54,445 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:30:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 06:30:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-12-09 06:30:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 06:30:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-09 06:30:54,447 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 8 [2018-12-09 06:30:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,448 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-09 06:30:54,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:30:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-09 06:30:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 06:30:54,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,448 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,448 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash -701279318, now seen corresponding path program 1 times [2018-12-09 06:30:54,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 06:30:54,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:30:54,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:30:54,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:30:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:30:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:30:54,466 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2018-12-09 06:30:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,475 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-09 06:30:54,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:30:54,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-09 06:30:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,476 INFO L225 Difference]: With dead ends: 30 [2018-12-09 06:30:54,476 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 06:30:54,477 INFO L631 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 [2018-12-09 06:30:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 06:30:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-12-09 06:30:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 06:30:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 06:30:54,480 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 12 [2018-12-09 06:30:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,480 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 06:30:54,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:30:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 06:30:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 06:30:54,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,481 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,481 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash -701279263, now seen corresponding path program 1 times [2018-12-09 06:30:54,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:54,541 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:54,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:54,585 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-09 06:30:54,586 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 06:30:54,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 06:30:54,591 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-09 06:30:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:54,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-12-09 06:30:54,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 06:30:54,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 06:30:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-09 06:30:54,634 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-12-09 06:30:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,677 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-09 06:30:54,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 06:30:54,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-12-09 06:30:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,678 INFO L225 Difference]: With dead ends: 31 [2018-12-09 06:30:54,678 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 06:30:54,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-09 06:30:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 06:30:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-12-09 06:30:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 06:30:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-09 06:30:54,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 12 [2018-12-09 06:30:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,680 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-09 06:30:54,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 06:30:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-09 06:30:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 06:30:54,681 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,681 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,681 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 77281552, now seen corresponding path program 1 times [2018-12-09 06:30:54,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:54,715 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:54,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:54,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-12-09 06:30:54,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 06:30:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 06:30:54,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-09 06:30:54,791 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2018-12-09 06:30:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,811 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-12-09 06:30:54,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 06:30:54,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-12-09 06:30:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,812 INFO L225 Difference]: With dead ends: 35 [2018-12-09 06:30:54,812 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 06:30:54,812 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-09 06:30:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 06:30:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-12-09 06:30:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 06:30:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-12-09 06:30:54,814 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 18 [2018-12-09 06:30:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,814 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-12-09 06:30:54,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 06:30:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-12-09 06:30:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 06:30:54,814 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,814 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,814 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 304709587, now seen corresponding path program 2 times [2018-12-09 06:30:54,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:54,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:54,863 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:54,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 06:30:54,883 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 06:30:54,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:54,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:54,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:54,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-09 06:30:54,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 06:30:54,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 06:30:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-09 06:30:54,934 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 10 states. [2018-12-09 06:30:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:54,955 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-09 06:30:54,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 06:30:54,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-12-09 06:30:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:54,956 INFO L225 Difference]: With dead ends: 39 [2018-12-09 06:30:54,956 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 06:30:54,956 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-09 06:30:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 06:30:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 06:30:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 06:30:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-12-09 06:30:54,959 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2018-12-09 06:30:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:54,959 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-12-09 06:30:54,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 06:30:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-12-09 06:30:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 06:30:54,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:54,959 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:54,960 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:54,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1914655466, now seen corresponding path program 3 times [2018-12-09 06:30:54,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:54,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:54,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:54,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:55,007 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:55,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 06:30:55,025 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-09 06:30:55,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:55,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:55,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-12-09 06:30:55,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 06:30:55,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 06:30:55,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-12-09 06:30:55,082 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 12 states. [2018-12-09 06:30:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:55,108 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-12-09 06:30:55,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 06:30:55,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-12-09 06:30:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:55,109 INFO L225 Difference]: With dead ends: 43 [2018-12-09 06:30:55,109 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 06:30:55,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-12-09 06:30:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 06:30:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-09 06:30:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 06:30:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-12-09 06:30:55,112 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 26 [2018-12-09 06:30:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:55,112 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-12-09 06:30:55,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 06:30:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-12-09 06:30:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 06:30:55,112 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:55,112 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:55,113 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:55,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash -739671847, now seen corresponding path program 4 times [2018-12-09 06:30:55,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:55,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:55,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:55,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:55,176 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 06:30:55,190 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 06:30:55,190 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:55,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:55,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-12-09 06:30:55,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 06:30:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 06:30:55,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-12-09 06:30:55,268 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2018-12-09 06:30:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:55,300 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-12-09 06:30:55,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 06:30:55,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-12-09 06:30:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:55,301 INFO L225 Difference]: With dead ends: 47 [2018-12-09 06:30:55,301 INFO L226 Difference]: Without dead ends: 47 [2018-12-09 06:30:55,301 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-12-09 06:30:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-09 06:30:55,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-12-09 06:30:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 06:30:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-12-09 06:30:55,304 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 30 [2018-12-09 06:30:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:55,305 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-12-09 06:30:55,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 06:30:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-12-09 06:30:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 06:30:55,305 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:55,306 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:55,306 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:55,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2114763548, now seen corresponding path program 5 times [2018-12-09 06:30:55,306 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:55,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:55,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:55,387 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/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 [2018-12-09 06:30:55,393 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 06:30:55,409 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-12-09 06:30:55,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:55,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:55,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-12-09 06:30:55,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 06:30:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 06:30:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-09 06:30:55,482 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 16 states. [2018-12-09 06:30:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:55,523 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-09 06:30:55,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 06:30:55,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2018-12-09 06:30:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:55,524 INFO L225 Difference]: With dead ends: 51 [2018-12-09 06:30:55,525 INFO L226 Difference]: Without dead ends: 51 [2018-12-09 06:30:55,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-09 06:30:55,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-09 06:30:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-09 06:30:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-09 06:30:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-09 06:30:55,528 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 34 [2018-12-09 06:30:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:55,528 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-09 06:30:55,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 06:30:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-09 06:30:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 06:30:55,529 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:55,529 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:55,529 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:55,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:55,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1816978465, now seen corresponding path program 6 times [2018-12-09 06:30:55,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:55,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:55,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:55,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:55,617 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:30:55,623 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 06:30:55,648 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-12-09 06:30:55,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:55,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:55,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-12-09 06:30:55,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 06:30:55,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 06:30:55,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-12-09 06:30:55,739 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 18 states. [2018-12-09 06:30:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:55,763 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-12-09 06:30:55,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 06:30:55,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-12-09 06:30:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:55,764 INFO L225 Difference]: With dead ends: 55 [2018-12-09 06:30:55,764 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 06:30:55,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-12-09 06:30:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 06:30:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-12-09 06:30:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-09 06:30:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-12-09 06:30:55,767 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 38 [2018-12-09 06:30:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:55,768 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-12-09 06:30:55,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 06:30:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-12-09 06:30:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-09 06:30:55,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:55,768 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:55,769 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:55,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1176149214, now seen corresponding path program 7 times [2018-12-09 06:30:55,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:55,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:55,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:55,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:55,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:55,872 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:30:55,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:55,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:56,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:56,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-12-09 06:30:56,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 06:30:56,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 06:30:56,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-12-09 06:30:56,030 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 20 states. [2018-12-09 06:30:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:56,064 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-12-09 06:30:56,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 06:30:56,065 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2018-12-09 06:30:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:56,065 INFO L225 Difference]: With dead ends: 59 [2018-12-09 06:30:56,065 INFO L226 Difference]: Without dead ends: 59 [2018-12-09 06:30:56,065 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-12-09 06:30:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-09 06:30:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-12-09 06:30:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-09 06:30:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-12-09 06:30:56,067 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 42 [2018-12-09 06:30:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:56,068 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-12-09 06:30:56,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 06:30:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-12-09 06:30:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 06:30:56,068 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:56,068 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:56,068 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:56,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1665945829, now seen corresponding path program 8 times [2018-12-09 06:30:56,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:56,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:56,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:56,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:30:56,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:30:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:56,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:30:56,146 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:30:56,152 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 06:30:56,164 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 06:30:56,164 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 06:30:56,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:30:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:30:56,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 06:30:56,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-12-09 06:30:56,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 06:30:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 06:30:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-12-09 06:30:56,276 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 22 states. [2018-12-09 06:30:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:30:56,319 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-12-09 06:30:56,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 06:30:56,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2018-12-09 06:30:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:30:56,319 INFO L225 Difference]: With dead ends: 63 [2018-12-09 06:30:56,319 INFO L226 Difference]: Without dead ends: 63 [2018-12-09 06:30:56,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-12-09 06:30:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-09 06:30:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2018-12-09 06:30:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-09 06:30:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-12-09 06:30:56,322 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 46 [2018-12-09 06:30:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:30:56,322 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-12-09 06:30:56,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 06:30:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-12-09 06:30:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 06:30:56,322 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:30:56,323 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:30:56,323 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-09 06:30:56,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:30:56,323 INFO L82 PathProgramCache]: Analyzing trace with hash 3188008, now seen corresponding path program 9 times [2018-12-09 06:30:56,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 06:30:56,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 06:30:56,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:56,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 06:30:56,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:30:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:30:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:30:56,354 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 06:30:56,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:30:56 BoogieIcfgContainer [2018-12-09 06:30:56,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 06:30:56,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 06:30:56,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 06:30:56,373 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 06:30:56,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:54" (3/4) ... [2018-12-09 06:30:56,375 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 06:30:56,404 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_41d17a19-11f9-47cc-baab-fa2b9b999b15/bin-2019/uautomizer/witness.graphml [2018-12-09 06:30:56,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 06:30:56,405 INFO L168 Benchmark]: Toolchain (without parser) took 2639.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -59.9 MB). Peak memory consumption was 147.2 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,406 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:30:56,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.12 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,406 INFO L168 Benchmark]: Boogie Preprocessor took 51.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,407 INFO L168 Benchmark]: RCFGBuilder took 164.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,407 INFO L168 Benchmark]: TraceAbstraction took 2261.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 164.8 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,407 INFO L168 Benchmark]: Witness Printer took 31.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-12-09 06:30:56,408 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.12 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 164.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2261.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 164.8 MB. Max. memory is 11.5 GB. * Witness Printer took 31.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; VAL [i=0, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=0, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=1, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=1, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=2, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=2, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=3, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=3, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=4, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=4, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=5, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=5, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=6, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=6, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=7, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=7, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=8, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=8, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=9, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=9, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] i++ VAL [i=10, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L10] COND FALSE !(i < 10) VAL [i=10, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L14] free(p) VAL [i=10, malloc(10 * sizeof(int))={42:0}, p={42:0}] [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 7 error locations. UNSAFE Result, 2.2s OverallTime, 14 OverallIterations, 10 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 294 SDtfs, 264 SDslu, 817 SDs, 0 SdLazy, 479 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 226 SyntacticMatches, 9 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=13, 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, 40 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 622 NumberOfCodeBlocks, 622 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 81056 SizeOfPredicates, 10 NumberOfNonLiveVariables, 907 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 2/1053 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...