./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/freeAlloca_false-valid-free.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/freeAlloca_false-valid-free.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 2749915c63b6e758ac6033a38fbdad80769d2869 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 04:45:38,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:38,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:38,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:38,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:38,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:38,889 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:38,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:38,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:38,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:38,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:38,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:38,894 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:38,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:38,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:38,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:38,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:38,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:38,900 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:38,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:38,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:38,903 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:38,905 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:38,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:38,906 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:38,906 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:38,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:38,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:38,909 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:38,910 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:38,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:38,911 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:38,911 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:38,911 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:38,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:38,913 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:38,913 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:38,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:38,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:38,926 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:38,926 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:38,926 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:38,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:38,927 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:38,927 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:38,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:38,928 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:38,928 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:38,928 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:38,929 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:38,929 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:38,929 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:38,929 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:38,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:38,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:38,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:38,930 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:38,931 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_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 -> 2749915c63b6e758ac6033a38fbdad80769d2869 [2018-10-27 04:45:38,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:38,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:38,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:38,980 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:38,981 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:38,981 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/freeAlloca_false-valid-free.c [2018-10-27 04:45:39,033 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/data/5eb39f18b/7be8867350b74f90b040df919c17bff6/FLAG7dba1eec2 [2018-10-27 04:45:39,412 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:39,413 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/sv-benchmarks/c/memsafety-ext3/freeAlloca_false-valid-free.c [2018-10-27 04:45:39,417 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/data/5eb39f18b/7be8867350b74f90b040df919c17bff6/FLAG7dba1eec2 [2018-10-27 04:45:39,429 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/data/5eb39f18b/7be8867350b74f90b040df919c17bff6 [2018-10-27 04:45:39,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:39,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:39,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:39,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:39,438 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:39,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2922dcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39, skipping insertion in model container [2018-10-27 04:45:39,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:39,468 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:39,581 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:39,589 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:39,599 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:39,614 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:39,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39 WrapperNode [2018-10-27 04:45:39,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:39,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:39,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:39,616 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:39,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:39,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:39,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:39,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:39,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 [2018-10-27 04:45:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-10-27 04:45:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-10-27 04:45:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-10-27 04:45:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:40,248 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:40,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40 BoogieIcfgContainer [2018-10-27 04:45:40,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:40,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:40,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:40,253 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:40,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:39" (1/3) ... [2018-10-27 04:45:40,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9b462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:40, skipping insertion in model container [2018-10-27 04:45:40,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (2/3) ... [2018-10-27 04:45:40,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9b462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:40, skipping insertion in model container [2018-10-27 04:45:40,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40" (3/3) ... [2018-10-27 04:45:40,258 INFO L112 eAbstractionObserver]: Analyzing ICFG freeAlloca_false-valid-free.c [2018-10-27 04:45:40,270 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:40,297 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-10-27 04:45:40,319 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-10-27 04:45:40,342 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:40,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:40,343 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:40,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:40,343 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:40,344 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:40,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:40,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:40,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-27 04:45:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 04:45:40,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,367 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,369 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:40,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash -196645647, now seen corresponding path program 1 times [2018-10-27 04:45:40,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:40,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:40,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 04:45:40,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 04:45:40,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:40,516 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-27 04:45:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,539 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-10-27 04:45:40,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 04:45:40,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-27 04:45:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,551 INFO L225 Difference]: With dead ends: 31 [2018-10-27 04:45:40,553 INFO L226 Difference]: Without dead ends: 28 [2018-10-27 04:45:40,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-27 04:45:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-27 04:45:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 04:45:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-10-27 04:45:40,588 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 9 [2018-10-27 04:45:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,588 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-10-27 04:45:40,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 04:45:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-10-27 04:45:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:45:40,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,589 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,589 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:40,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1801060631, now seen corresponding path program 1 times [2018-10-27 04:45:40,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:40,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:40,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:40,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:40,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:40,648 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 3 states. [2018-10-27 04:45:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,752 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-10-27 04:45:40,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:40,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 04:45:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,753 INFO L225 Difference]: With dead ends: 35 [2018-10-27 04:45:40,754 INFO L226 Difference]: Without dead ends: 35 [2018-10-27 04:45:40,754 INFO L605 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 [2018-10-27 04:45:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-27 04:45:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-10-27 04:45:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-27 04:45:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-10-27 04:45:40,757 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 10 [2018-10-27 04:45:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,757 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-10-27 04:45:40,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-10-27 04:45:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:45:40,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,758 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,758 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:40,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1801060578, now seen corresponding path program 1 times [2018-10-27 04:45:40,758 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:40,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:40,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:40,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:40,815 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 4 states. [2018-10-27 04:45:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,906 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-10-27 04:45:40,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:40,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-27 04:45:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,908 INFO L225 Difference]: With dead ends: 29 [2018-10-27 04:45:40,908 INFO L226 Difference]: Without dead ends: 29 [2018-10-27 04:45:40,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-27 04:45:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-10-27 04:45:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-27 04:45:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-27 04:45:40,910 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2018-10-27 04:45:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,912 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-27 04:45:40,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-27 04:45:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:45:40,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,913 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,913 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:40,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1801060577, now seen corresponding path program 1 times [2018-10-27 04:45:40,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:41,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:41,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:41,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:41,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:41,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:41,075 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2018-10-27 04:45:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:41,239 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-10-27 04:45:41,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:41,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-27 04:45:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:41,240 INFO L225 Difference]: With dead ends: 30 [2018-10-27 04:45:41,240 INFO L226 Difference]: Without dead ends: 30 [2018-10-27 04:45:41,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-27 04:45:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-10-27 04:45:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 04:45:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-10-27 04:45:41,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 10 [2018-10-27 04:45:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:41,245 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-10-27 04:45:41,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-10-27 04:45:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 04:45:41,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:41,246 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:41,246 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:41,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:41,246 INFO L82 PathProgramCache]: Analyzing trace with hash -523019111, now seen corresponding path program 1 times [2018-10-27 04:45:41,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:41,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:41,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:41,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 04:45:41,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:41,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:41,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:41,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:41,330 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2018-10-27 04:45:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:41,364 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-10-27 04:45:41,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:41,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-27 04:45:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:41,364 INFO L225 Difference]: With dead ends: 26 [2018-10-27 04:45:41,364 INFO L226 Difference]: Without dead ends: 26 [2018-10-27 04:45:41,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-27 04:45:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-27 04:45:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-27 04:45:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-10-27 04:45:41,367 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 15 [2018-10-27 04:45:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:41,367 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-10-27 04:45:41,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-10-27 04:45:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 04:45:41,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:41,368 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:41,368 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:41,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:41,368 INFO L82 PathProgramCache]: Analyzing trace with hash -523019058, now seen corresponding path program 1 times [2018-10-27 04:45:41,368 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:41,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:41,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:41,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:41,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:41,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 04:45:41,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 04:45:41,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 04:45:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 04:45:41,620 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2018-10-27 04:45:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:41,844 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-10-27 04:45:41,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 04:45:41,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-10-27 04:45:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:41,846 INFO L225 Difference]: With dead ends: 27 [2018-10-27 04:45:41,846 INFO L226 Difference]: Without dead ends: 27 [2018-10-27 04:45:41,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-27 04:45:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-27 04:45:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-10-27 04:45:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-27 04:45:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-27 04:45:41,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2018-10-27 04:45:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:41,850 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-27 04:45:41,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 04:45:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-27 04:45:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 04:45:41,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:41,856 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:41,856 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:41,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:41,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1397906127, now seen corresponding path program 1 times [2018-10-27 04:45:41,857 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:41,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:41,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:41,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:42,021 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 [2018-10-27 04:45:42,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:42,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-27 04:45:42,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:42,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:42,091 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-10-27 04:45:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:42,116 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-10-27 04:45:42,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:42,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-27 04:45:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:42,117 INFO L225 Difference]: With dead ends: 32 [2018-10-27 04:45:42,117 INFO L226 Difference]: Without dead ends: 32 [2018-10-27 04:45:42,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-27 04:45:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-10-27 04:45:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-27 04:45:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-10-27 04:45:42,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 20 [2018-10-27 04:45:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:42,121 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-10-27 04:45:42,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-10-27 04:45:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-27 04:45:42,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:42,122 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:42,123 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:42,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1105261600, now seen corresponding path program 2 times [2018-10-27 04:45:42,123 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:42,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:42,183 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 04:45:42,198 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 04:45:42,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:42,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:42,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:42,281 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_#t~malloc1.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc1.base|) 0))) is different from true [2018-10-27 04:45:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 04:45:42,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:42,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-10-27 04:45:42,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 04:45:42,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 04:45:42,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2018-10-27 04:45:42,306 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2018-10-27 04:45:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:42,455 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-27 04:45:42,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 04:45:42,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-10-27 04:45:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:42,456 INFO L225 Difference]: With dead ends: 41 [2018-10-27 04:45:42,456 INFO L226 Difference]: Without dead ends: 37 [2018-10-27 04:45:42,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=75, Unknown=2, NotChecked=18, Total=132 [2018-10-27 04:45:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-27 04:45:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-10-27 04:45:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-27 04:45:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-27 04:45:42,460 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-10-27 04:45:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:42,460 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-27 04:45:42,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 04:45:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-27 04:45:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-27 04:45:42,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:42,463 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:42,463 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:42,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash 83580925, now seen corresponding path program 1 times [2018-10-27 04:45:42,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:42,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:42,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 04:45:42,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:42,529 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 [2018-10-27 04:45:42,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:42,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-27 04:45:42,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 04:45:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 04:45:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-27 04:45:42,689 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 7 states. [2018-10-27 04:45:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:42,823 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-27 04:45:42,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 04:45:42,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2018-10-27 04:45:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:42,827 INFO L225 Difference]: With dead ends: 42 [2018-10-27 04:45:42,827 INFO L226 Difference]: Without dead ends: 42 [2018-10-27 04:45:42,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-27 04:45:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-27 04:45:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-10-27 04:45:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-27 04:45:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-27 04:45:42,832 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2018-10-27 04:45:42,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:42,832 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-27 04:45:42,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 04:45:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-27 04:45:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 04:45:42,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:42,835 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:42,835 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2018-10-27 04:45:42,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 740689262, now seen corresponding path program 2 times [2018-10-27 04:45:42,836 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:42,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:42,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:42,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:42,924 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/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 [2018-10-27 04:45:42,942 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:42,967 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:42,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:42,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:43,148 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_#t~malloc1.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc1.base|) 0))) is different from true [2018-10-27 04:45:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-27 04:45:43,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:43,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2018-10-27 04:45:43,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 04:45:43,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 04:45:43,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=80, Unknown=1, NotChecked=18, Total=132 [2018-10-27 04:45:43,171 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 12 states. [2018-10-27 04:45:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:43,504 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-27 04:45:43,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 04:45:43,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2018-10-27 04:45:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:43,504 INFO L225 Difference]: With dead ends: 46 [2018-10-27 04:45:43,505 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 04:45:43,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=192, Unknown=2, NotChecked=30, Total=306 [2018-10-27 04:45:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 04:45:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 04:45:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 04:45:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 04:45:43,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-10-27 04:45:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:43,506 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 04:45:43,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 04:45:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 04:45:43,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 04:45:43,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:43 BoogieIcfgContainer [2018-10-27 04:45:43,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:43,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:43,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:43,511 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:43,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40" (3/4) ... [2018-10-27 04:45:43,516 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 04:45:43,521 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 04:45:43,522 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 04:45:43,526 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-27 04:45:43,526 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-27 04:45:43,527 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:45:43,561 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7f48e3b5-3c64-4a91-ae66-d773748cc039/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:43,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:43,562 INFO L168 Benchmark]: Toolchain (without parser) took 4129.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 959.3 MB in the beginning and 928.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 185.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,563 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:43,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,564 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,564 INFO L168 Benchmark]: RCFGBuilder took 603.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,565 INFO L168 Benchmark]: TraceAbstraction took 3260.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.9 MB in the end (delta: 207.2 MB). Peak memory consumption was 207.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,565 INFO L168 Benchmark]: Witness Printer took 51.16 ms. Allocated memory is still 1.2 GB. Free memory was 930.9 MB in the beginning and 928.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:43,570 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 603.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3260.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.9 MB in the end (delta: 207.2 MB). Peak memory consumption was 207.2 MB. Max. memory is 11.5 GB. * Witness Printer took 51.16 ms. Allocated memory is still 1.2 GB. Free memory was 930.9 MB in the beginning and 928.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 13]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 7 error locations. SAFE Result, 3.1s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 187 SDtfs, 198 SDslu, 307 SDs, 0 SdLazy, 260 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=9, 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, 10 MinimizatonAttempts, 21 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 301 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 287 ConstructedInterpolants, 4 QuantifiedInterpolants, 36509 SizeOfPredicates, 6 NumberOfNonLiveVariables, 274 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 52/145 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...