./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_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:58,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:48:58,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:48:58,207 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:48:58,207 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:48:58,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:48:58,208 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:48:58,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:48:58,210 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:48:58,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:48:58,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:48:58,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:48:58,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:48:58,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:48:58,212 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:48:58,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:48:58,213 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:48:58,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:48:58,215 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:48:58,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:48:58,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:48:58,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:48:58,218 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:48:58,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:48:58,218 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:48:58,219 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:48:58,219 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:48:58,220 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:48:58,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:48:58,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:48:58,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:48:58,221 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:48:58,222 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:48:58,222 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:48:58,222 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:48:58,223 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:48:58,223 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 23:48:58,231 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:48:58,231 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:48:58,231 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:48:58,232 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:48:58,232 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 23:48:58,232 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 23:48:58,232 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 23:48:58,232 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:48:58,232 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:48:58,233 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:48:58,234 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 23:48:58,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:48:58,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:48:58,234 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:48:58,234 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:48:58,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:48:58,234 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:48:58,235 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:48:58,235 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 23:48:58,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:48:58,235 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_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:58,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:48:58,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:48:58,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:48:58,265 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:48:58,265 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:48:58,266 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c [2018-12-02 23:48:58,312 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/data/5c54caae4/195f345158fa47a29e0d4c7f4b5fd3e8/FLAG4a5d03e3f [2018-12-02 23:48:58,604 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:48:58,605 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/sv-benchmarks/c/memsafety-ext3/realloc1_false-valid-deref.c [2018-12-02 23:48:58,608 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/data/5c54caae4/195f345158fa47a29e0d4c7f4b5fd3e8/FLAG4a5d03e3f [2018-12-02 23:48:58,616 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/data/5c54caae4/195f345158fa47a29e0d4c7f4b5fd3e8 [2018-12-02 23:48:58,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:48:58,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 23:48:58,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:48:58,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:48:58,621 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:48:58,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630ff43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58, skipping insertion in model container [2018-12-02 23:48:58,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:48:58,635 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:48:58,717 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:48:58,725 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:48:58,734 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:48:58,743 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:48:58,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58 WrapperNode [2018-12-02 23:48:58,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:48:58,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:48:58,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:48:58,744 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:48:58,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... [2018-12-02 23:48:58,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:48:58,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:48:58,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:48:58,793 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:48:58,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:48:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:48:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:48:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:48:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:48:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:48:58,951 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:48:58,951 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 23:48:58,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:48:58 BoogieIcfgContainer [2018-12-02 23:48:58,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:48:58,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:48:58,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:48:58,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:48:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:48:58" (1/3) ... [2018-12-02 23:48:58,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f07d087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:48:58, skipping insertion in model container [2018-12-02 23:48:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:48:58" (2/3) ... [2018-12-02 23:48:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f07d087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:48:58, skipping insertion in model container [2018-12-02 23:48:58,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:48:58" (3/3) ... [2018-12-02 23:48:58,956 INFO L112 eAbstractionObserver]: Analyzing ICFG realloc1_false-valid-deref.c [2018-12-02 23:48:58,961 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:48:58,966 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-02 23:48:58,976 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-02 23:48:58,991 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 23:48:58,993 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:48:58,993 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 23:48:58,993 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:48:58,993 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:48:58,994 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:48:58,994 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:48:58,994 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:48:58,994 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:48:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-02 23:48:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 23:48:59,015 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,016 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,017 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581223, now seen corresponding path program 1 times [2018-12-02 23:48:59,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:48:59,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 23:48:59,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:48:59,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:48:59,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:48:59,120 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-12-02 23:48:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,143 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-12-02 23:48:59,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:48:59,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 23:48:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,150 INFO L225 Difference]: With dead ends: 37 [2018-12-02 23:48:59,150 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:48:59,151 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 [2018-12-02 23:48:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:48:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-12-02 23:48:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 23:48:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-12-02 23:48:59,171 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2018-12-02 23:48:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,171 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-12-02 23:48:59,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:48:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-12-02 23:48:59,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 23:48:59,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,172 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,172 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581277, now seen corresponding path program 1 times [2018-12-02 23:48:59,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:48:59,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:48:59,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:48:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:48:59,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:48:59,206 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 3 states. [2018-12-02 23:48:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,232 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-02 23:48:59,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:48:59,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 23:48:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,233 INFO L225 Difference]: With dead ends: 30 [2018-12-02 23:48:59,233 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 23:48:59,234 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 [2018-12-02 23:48:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 23:48:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-12-02 23:48:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-02 23:48:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-02 23:48:59,236 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2018-12-02 23:48:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,236 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-02 23:48:59,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:48:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-02 23:48:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 23:48:59,236 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,236 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,236 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1411581278, now seen corresponding path program 1 times [2018-12-02 23:48:59,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:48:59,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:48:59,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:48:59,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:48:59,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:48:59,271 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-12-02 23:48:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,303 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-12-02 23:48:59,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:48:59,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 23:48:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,304 INFO L225 Difference]: With dead ends: 30 [2018-12-02 23:48:59,305 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 23:48:59,305 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 [2018-12-02 23:48:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 23:48:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-12-02 23:48:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 23:48:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-02 23:48:59,308 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 8 [2018-12-02 23:48:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,308 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-02 23:48:59,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:48:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-02 23:48:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 23:48:59,309 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,309 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,309 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,309 INFO L82 PathProgramCache]: Analyzing trace with hash -701279318, now seen corresponding path program 1 times [2018-12-02 23:48:59,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 23:48:59,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:48:59,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:48:59,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 23:48:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 23:48:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 23:48:59,334 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2018-12-02 23:48:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,345 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-02 23:48:59,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 23:48:59,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-02 23:48:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,346 INFO L225 Difference]: With dead ends: 30 [2018-12-02 23:48:59,346 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 23:48:59,346 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 [2018-12-02 23:48:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 23:48:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-12-02 23:48:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-02 23:48:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-02 23:48:59,349 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 12 [2018-12-02 23:48:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,349 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-02 23:48:59,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 23:48:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-02 23:48:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 23:48:59,350 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,350 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,350 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,350 INFO L82 PathProgramCache]: Analyzing trace with hash -701279263, now seen corresponding path program 1 times [2018-12-02 23:48:59,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:48:59,412 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:59,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:48:59,455 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 [2018-12-02 23:48:59,456 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 23:48:59,461 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 23:48:59,461 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 23:48:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:48:59,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-12-02 23:48:59,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 23:48:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 23:48:59,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-02 23:48:59,514 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-12-02 23:48:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,563 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-02 23:48:59,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 23:48:59,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-12-02 23:48:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,564 INFO L225 Difference]: With dead ends: 31 [2018-12-02 23:48:59,564 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 23:48:59,565 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 [2018-12-02 23:48:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 23:48:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-12-02 23:48:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 23:48:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-02 23:48:59,567 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 12 [2018-12-02 23:48:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,567 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-02 23:48:59,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 23:48:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-02 23:48:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 23:48:59,567 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,567 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,568 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash 77281552, now seen corresponding path program 1 times [2018-12-02 23:48:59,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:48:59,605 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:59,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:48:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:48:59,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-12-02 23:48:59,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 23:48:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 23:48:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-02 23:48:59,672 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2018-12-02 23:48:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,688 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-12-02 23:48:59,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 23:48:59,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-12-02 23:48:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,689 INFO L225 Difference]: With dead ends: 35 [2018-12-02 23:48:59,689 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 23:48:59,689 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 [2018-12-02 23:48:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 23:48:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-12-02 23:48:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-02 23:48:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-12-02 23:48:59,691 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 18 [2018-12-02 23:48:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,691 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-12-02 23:48:59,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 23:48:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-12-02 23:48:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 23:48:59,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,692 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,692 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash 304709587, now seen corresponding path program 2 times [2018-12-02 23:48:59,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:48:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:48:59,728 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:59,735 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 23:48:59,745 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 23:48:59,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:48:59,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:48:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:48:59,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-02 23:48:59,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 23:48:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 23:48:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-02 23:48:59,795 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 10 states. [2018-12-02 23:48:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,821 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-02 23:48:59,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 23:48:59,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-12-02 23:48:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,822 INFO L225 Difference]: With dead ends: 39 [2018-12-02 23:48:59,822 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 23:48:59,822 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 [2018-12-02 23:48:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 23:48:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-02 23:48:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 23:48:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-12-02 23:48:59,824 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2018-12-02 23:48:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,824 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-12-02 23:48:59,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 23:48:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-12-02 23:48:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 23:48:59,825 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,825 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,825 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1914655466, now seen corresponding path program 3 times [2018-12-02 23:48:59,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:48:59,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:48:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:48:59,874 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:48:59,880 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 23:48:59,896 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-02 23:48:59,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:48:59,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:48:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:48:59,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:48:59,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-12-02 23:48:59,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 23:48:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 23:48:59,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-12-02 23:48:59,961 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 12 states. [2018-12-02 23:48:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:48:59,985 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-12-02 23:48:59,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 23:48:59,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-12-02 23:48:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:48:59,986 INFO L225 Difference]: With dead ends: 43 [2018-12-02 23:48:59,986 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 23:48:59,986 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 [2018-12-02 23:48:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 23:48:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-02 23:48:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 23:48:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-12-02 23:48:59,989 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 26 [2018-12-02 23:48:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:48:59,989 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-12-02 23:48:59,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 23:48:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-12-02 23:48:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 23:48:59,989 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:48:59,989 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:48:59,990 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:48:59,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:48:59,990 INFO L82 PathProgramCache]: Analyzing trace with hash -739671847, now seen corresponding path program 4 times [2018-12-02 23:48:59,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:48:59,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:48:59,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:48:59,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:48:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:49:00,062 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:49:00,067 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 23:49:00,081 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 23:49:00,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:49:00,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:49:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:49:00,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-12-02 23:49:00,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 23:49:00,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 23:49:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-12-02 23:49:00,158 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2018-12-02 23:49:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:49:00,192 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-12-02 23:49:00,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 23:49:00,193 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-12-02 23:49:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:49:00,193 INFO L225 Difference]: With dead ends: 47 [2018-12-02 23:49:00,193 INFO L226 Difference]: Without dead ends: 47 [2018-12-02 23:49:00,194 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 [2018-12-02 23:49:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-02 23:49:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-12-02 23:49:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 23:49:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-12-02 23:49:00,196 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 30 [2018-12-02 23:49:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:49:00,196 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-12-02 23:49:00,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 23:49:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-12-02 23:49:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 23:49:00,197 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:49:00,197 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:49:00,197 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:49:00,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:49:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2114763548, now seen corresponding path program 5 times [2018-12-02 23:49:00,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:49:00,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:49:00,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:49:00,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:49:00,298 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:49:00,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 23:49:00,327 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-12-02 23:49:00,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:49:00,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:49:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:49:00,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-12-02 23:49:00,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-02 23:49:00,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-02 23:49:00,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-02 23:49:00,409 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 16 states. [2018-12-02 23:49:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:49:00,450 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 23:49:00,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 23:49:00,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2018-12-02 23:49:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:49:00,451 INFO L225 Difference]: With dead ends: 51 [2018-12-02 23:49:00,451 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 23:49:00,452 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-02 23:49:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 23:49:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-02 23:49:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 23:49:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-02 23:49:00,454 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 34 [2018-12-02 23:49:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:49:00,454 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-02 23:49:00,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-02 23:49:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-02 23:49:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 23:49:00,454 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:49:00,454 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:49:00,455 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:49:00,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:49:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1816978465, now seen corresponding path program 6 times [2018-12-02 23:49:00,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:49:00,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:49:00,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:49:00,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:49:00,542 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:49:00,549 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 23:49:00,580 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-12-02 23:49:00,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:49:00,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:49:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:49:00,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-12-02 23:49:00,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 23:49:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 23:49:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-12-02 23:49:00,658 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 18 states. [2018-12-02 23:49:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:49:00,682 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-12-02 23:49:00,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 23:49:00,683 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-12-02 23:49:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:49:00,683 INFO L225 Difference]: With dead ends: 55 [2018-12-02 23:49:00,683 INFO L226 Difference]: Without dead ends: 55 [2018-12-02 23:49:00,684 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 [2018-12-02 23:49:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-02 23:49:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-12-02 23:49:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-02 23:49:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-12-02 23:49:00,686 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 38 [2018-12-02 23:49:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:49:00,686 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-12-02 23:49:00,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 23:49:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-12-02 23:49:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-02 23:49:00,687 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:49:00,687 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:49:00,687 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:49:00,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:49:00,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1176149214, now seen corresponding path program 7 times [2018-12-02 23:49:00,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:49:00,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:49:00,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:49:00,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:49:00,764 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:49:00,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:49:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:49:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:49:00,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-12-02 23:49:00,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 23:49:00,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 23:49:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-12-02 23:49:00,866 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 20 states. [2018-12-02 23:49:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:49:00,905 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-12-02 23:49:00,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 23:49:00,906 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2018-12-02 23:49:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:49:00,906 INFO L225 Difference]: With dead ends: 59 [2018-12-02 23:49:00,906 INFO L226 Difference]: Without dead ends: 59 [2018-12-02 23:49:00,906 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 [2018-12-02 23:49:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-02 23:49:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-12-02 23:49:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-02 23:49:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-12-02 23:49:00,908 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 42 [2018-12-02 23:49:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:49:00,908 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-12-02 23:49:00,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 23:49:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-12-02 23:49:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-02 23:49:00,909 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:49:00,909 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:49:00,909 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:49:00,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:49:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1665945829, now seen corresponding path program 8 times [2018-12-02 23:49:00,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:49:00,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:49:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:49:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:49:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:00,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 23:49:00,990 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/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 [2018-12-02 23:49:00,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 23:49:01,007 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 23:49:01,007 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 23:49:01,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:49:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:49:01,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 23:49:01,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-12-02 23:49:01,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-02 23:49:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-02 23:49:01,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-12-02 23:49:01,113 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 22 states. [2018-12-02 23:49:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:49:01,166 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-12-02 23:49:01,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 23:49:01,166 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2018-12-02 23:49:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:49:01,166 INFO L225 Difference]: With dead ends: 63 [2018-12-02 23:49:01,167 INFO L226 Difference]: Without dead ends: 63 [2018-12-02 23:49:01,167 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 [2018-12-02 23:49:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-02 23:49:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2018-12-02 23:49:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-02 23:49:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-12-02 23:49:01,169 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 46 [2018-12-02 23:49:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:49:01,169 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-12-02 23:49:01,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-02 23:49:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-12-02 23:49:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 23:49:01,170 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:49:01,170 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:49:01,170 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 23:49:01,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:49:01,170 INFO L82 PathProgramCache]: Analyzing trace with hash 3188008, now seen corresponding path program 9 times [2018-12-02 23:49:01,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 23:49:01,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 23:49:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:01,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 23:49:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:49:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:49:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:49:01,213 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:49:01,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:49:01 BoogieIcfgContainer [2018-12-02 23:49:01,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:49:01,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:49:01,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:49:01,232 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:49:01,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:48:58" (3/4) ... [2018-12-02 23:49:01,233 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 23:49:01,263 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ae83afa3-a14d-4557-bc59-ecd987c58c5c/bin-2019/uautomizer/witness.graphml [2018-12-02 23:49:01,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:49:01,264 INFO L168 Benchmark]: Toolchain (without parser) took 2646.09 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.8 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -59.3 MB). Peak memory consumption was 162.5 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,265 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:49:01,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.55 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,266 INFO L168 Benchmark]: Boogie Preprocessor took 48.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 951.7 MB in the beginning and 1.2 GB in the end (delta: -203.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,266 INFO L168 Benchmark]: RCFGBuilder took 158.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,266 INFO L168 Benchmark]: TraceAbstraction took 2279.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.0 MB). Peak memory consumption was 166.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,267 INFO L168 Benchmark]: Witness Printer took 32.34 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-02 23:49:01,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.55 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 951.7 MB in the beginning and 1.2 GB in the end (delta: -203.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2279.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.0 MB). Peak memory consumption was 166.4 MB. Max. memory is 11.5 GB. * Witness Printer took 32.34 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 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...