./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i --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_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 986c31897144a5b76f321e97eaa1d3383cce25ed ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 17:57:12,357 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 17:57:12,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 17:57:12,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 17:57:12,364 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 17:57:12,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 17:57:12,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 17:57:12,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 17:57:12,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 17:57:12,369 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 17:57:12,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 17:57:12,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 17:57:12,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 17:57:12,371 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 17:57:12,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 17:57:12,372 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 17:57:12,373 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 17:57:12,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 17:57:12,375 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 17:57:12,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 17:57:12,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 17:57:12,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 17:57:12,379 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 17:57:12,379 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 17:57:12,380 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 17:57:12,380 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 17:57:12,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 17:57:12,382 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 17:57:12,382 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 17:57:12,383 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 17:57:12,383 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 17:57:12,384 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 17:57:12,384 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 17:57:12,384 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 17:57:12,384 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 17:57:12,385 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 17:57:12,385 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-01 17:57:12,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 17:57:12,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 17:57:12,396 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 17:57:12,396 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 17:57:12,396 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 17:57:12,396 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 17:57:12,397 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 17:57:12,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 17:57:12,397 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 17:57:12,397 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 17:57:12,397 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 17:57:12,397 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 17:57:12,398 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 17:57:12,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 17:57:12,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 17:57:12,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 17:57:12,400 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_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 -> 986c31897144a5b76f321e97eaa1d3383cce25ed [2018-12-01 17:57:12,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 17:57:12,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 17:57:12,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 17:57:12,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 17:57:12,431 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 17:57:12,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2018-12-01 17:57:12,466 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/data/aab86f32d/fae9ae5995ae4cb290ae1150c72f2a91/FLAG422c9ca4d [2018-12-01 17:57:12,933 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 17:57:12,934 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/sv-benchmarks/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2018-12-01 17:57:12,940 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/data/aab86f32d/fae9ae5995ae4cb290ae1150c72f2a91/FLAG422c9ca4d [2018-12-01 17:57:12,949 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/data/aab86f32d/fae9ae5995ae4cb290ae1150c72f2a91 [2018-12-01 17:57:12,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 17:57:12,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-01 17:57:12,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 17:57:12,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 17:57:12,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 17:57:12,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:57:12" (1/1) ... [2018-12-01 17:57:12,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8167c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:12, skipping insertion in model container [2018-12-01 17:57:12,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:57:12" (1/1) ... [2018-12-01 17:57:12,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 17:57:12,979 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 17:57:13,145 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 17:57:13,152 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 17:57:13,216 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 17:57:13,236 INFO L195 MainTranslator]: Completed translation [2018-12-01 17:57:13,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13 WrapperNode [2018-12-01 17:57:13,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 17:57:13,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 17:57:13,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 17:57:13,237 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 17:57:13,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... [2018-12-01 17:57:13,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 17:57:13,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 17:57:13,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 17:57:13,267 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 17:57:13,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2018-12-01 17:57:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 17:57:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-01 17:57:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-01 17:57:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-01 17:57:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-01 17:57:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-01 17:57:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-01 17:57:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-01 17:57:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-01 17:57:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-01 17:57:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-01 17:57:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-01 17:57:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-01 17:57:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-01 17:57:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 17:57:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 17:57:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 17:57:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 17:57:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 17:57:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 17:57:13,522 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 17:57:13,522 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-01 17:57:13,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:13 BoogieIcfgContainer [2018-12-01 17:57:13,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 17:57:13,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 17:57:13,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 17:57:13,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 17:57:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 05:57:12" (1/3) ... [2018-12-01 17:57:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ec06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 05:57:13, skipping insertion in model container [2018-12-01 17:57:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:13" (2/3) ... [2018-12-01 17:57:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ec06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 05:57:13, skipping insertion in model container [2018-12-01 17:57:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:13" (3/3) ... [2018-12-01 17:57:13,526 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca_true-valid-memsafety_true-termination.i [2018-12-01 17:57:13,532 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 17:57:13,536 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-01 17:57:13,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-01 17:57:13,559 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 17:57:13,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 17:57:13,560 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-01 17:57:13,560 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 17:57:13,560 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 17:57:13,560 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 17:57:13,560 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 17:57:13,560 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 17:57:13,560 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 17:57:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-01 17:57:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 17:57:13,574 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:13,574 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:13,576 INFO L423 AbstractCegarLoop]: === Iteration 1 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:13,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash -179147167, now seen corresponding path program 1 times [2018-12-01 17:57:13,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:13,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:13,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:13,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:13,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:13,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 17:57:13,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 17:57:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 17:57:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:57:13,717 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2018-12-01 17:57:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:13,784 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-12-01 17:57:13,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 17:57:13,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-01 17:57:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:13,790 INFO L225 Difference]: With dead ends: 35 [2018-12-01 17:57:13,790 INFO L226 Difference]: Without dead ends: 32 [2018-12-01 17:57:13,792 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-01 17:57:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-01 17:57:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-01 17:57:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-12-01 17:57:13,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2018-12-01 17:57:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:13,813 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-12-01 17:57:13,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 17:57:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-12-01 17:57:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 17:57:13,814 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:13,814 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:13,814 INFO L423 AbstractCegarLoop]: === Iteration 2 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:13,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:13,814 INFO L82 PathProgramCache]: Analyzing trace with hash -179147166, now seen corresponding path program 1 times [2018-12-01 17:57:13,814 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:13,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:13,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:13,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:13,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:13,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 17:57:13,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 17:57:13,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 17:57:13,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:13,890 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2018-12-01 17:57:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:13,941 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2018-12-01 17:57:13,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 17:57:13,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-12-01 17:57:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:13,943 INFO L225 Difference]: With dead ends: 48 [2018-12-01 17:57:13,943 INFO L226 Difference]: Without dead ends: 48 [2018-12-01 17:57:13,944 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-01 17:57:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-01 17:57:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2018-12-01 17:57:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-01 17:57:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-12-01 17:57:13,947 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 14 [2018-12-01 17:57:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:13,947 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-01 17:57:13,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 17:57:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-12-01 17:57:13,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 17:57:13,947 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:13,948 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:13,948 INFO L423 AbstractCegarLoop]: === Iteration 3 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:13,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:13,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594887, now seen corresponding path program 1 times [2018-12-01 17:57:13,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:13,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:13,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:13,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:13,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:13,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 17:57:13,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 17:57:13,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 17:57:13,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:57:13,976 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2018-12-01 17:57:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,020 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2018-12-01 17:57:14,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 17:57:14,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-01 17:57:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,021 INFO L225 Difference]: With dead ends: 38 [2018-12-01 17:57:14,021 INFO L226 Difference]: Without dead ends: 38 [2018-12-01 17:57:14,021 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-01 17:57:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-01 17:57:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-01 17:57:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2018-12-01 17:57:14,024 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 15 [2018-12-01 17:57:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,024 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2018-12-01 17:57:14,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 17:57:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2018-12-01 17:57:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 17:57:14,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,024 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,024 INFO L423 AbstractCegarLoop]: === Iteration 4 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594886, now seen corresponding path program 1 times [2018-12-01 17:57:14,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:14,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 17:57:14,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 17:57:14,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 17:57:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-01 17:57:14,077 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2018-12-01 17:57:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,149 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2018-12-01 17:57:14,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 17:57:14,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-12-01 17:57:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,150 INFO L225 Difference]: With dead ends: 60 [2018-12-01 17:57:14,150 INFO L226 Difference]: Without dead ends: 60 [2018-12-01 17:57:14,150 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-01 17:57:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-01 17:57:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2018-12-01 17:57:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-01 17:57:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2018-12-01 17:57:14,155 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2018-12-01 17:57:14,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,155 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2018-12-01 17:57:14,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 17:57:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2018-12-01 17:57:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 17:57:14,156 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,156 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,157 INFO L423 AbstractCegarLoop]: === Iteration 5 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash -362541574, now seen corresponding path program 1 times [2018-12-01 17:57:14,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:14,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 17:57:14,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 17:57:14,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 17:57:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:57:14,186 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand 5 states. [2018-12-01 17:57:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,209 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-12-01 17:57:14,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 17:57:14,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-01 17:57:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,209 INFO L225 Difference]: With dead ends: 54 [2018-12-01 17:57:14,210 INFO L226 Difference]: Without dead ends: 52 [2018-12-01 17:57:14,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-01 17:57:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-12-01 17:57:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-01 17:57:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2018-12-01 17:57:14,212 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 16 [2018-12-01 17:57:14,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,213 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2018-12-01 17:57:14,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 17:57:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2018-12-01 17:57:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 17:57:14,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,213 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,213 INFO L423 AbstractCegarLoop]: === Iteration 6 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,213 INFO L82 PathProgramCache]: Analyzing trace with hash -361778601, now seen corresponding path program 1 times [2018-12-01 17:57:14,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:14,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 17:57:14,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 17:57:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 17:57:14,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:57:14,241 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 5 states. [2018-12-01 17:57:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,265 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2018-12-01 17:57:14,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 17:57:14,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-01 17:57:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,266 INFO L225 Difference]: With dead ends: 45 [2018-12-01 17:57:14,266 INFO L226 Difference]: Without dead ends: 45 [2018-12-01 17:57:14,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-01 17:57:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-01 17:57:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-01 17:57:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-12-01 17:57:14,269 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 16 [2018-12-01 17:57:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,269 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-12-01 17:57:14,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 17:57:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2018-12-01 17:57:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 17:57:14,270 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,270 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,270 INFO L423 AbstractCegarLoop]: === Iteration 7 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,270 INFO L82 PathProgramCache]: Analyzing trace with hash -361778600, now seen corresponding path program 1 times [2018-12-01 17:57:14,271 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:14,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 17:57:14,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 17:57:14,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 17:57:14,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:14,303 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 6 states. [2018-12-01 17:57:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,338 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2018-12-01 17:57:14,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 17:57:14,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-12-01 17:57:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,340 INFO L225 Difference]: With dead ends: 54 [2018-12-01 17:57:14,340 INFO L226 Difference]: Without dead ends: 54 [2018-12-01 17:57:14,340 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-01 17:57:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-01 17:57:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2018-12-01 17:57:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-01 17:57:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2018-12-01 17:57:14,343 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 16 [2018-12-01 17:57:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,343 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2018-12-01 17:57:14,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 17:57:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2018-12-01 17:57:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 17:57:14,344 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,344 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,344 INFO L423 AbstractCegarLoop]: === Iteration 8 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash -399235342, now seen corresponding path program 1 times [2018-12-01 17:57:14,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:57:14,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:14,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:57:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 17:57:14,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2018-12-01 17:57:14,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-01 17:57:14,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-01 17:57:14,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-12-01 17:57:14,501 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand 12 states. [2018-12-01 17:57:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:14,584 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2018-12-01 17:57:14,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 17:57:14,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-12-01 17:57:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:14,584 INFO L225 Difference]: With dead ends: 91 [2018-12-01 17:57:14,585 INFO L226 Difference]: Without dead ends: 91 [2018-12-01 17:57:14,585 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-12-01 17:57:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-12-01 17:57:14,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2018-12-01 17:57:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-12-01 17:57:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2018-12-01 17:57:14,588 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 19 [2018-12-01 17:57:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:14,589 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2018-12-01 17:57:14,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-01 17:57:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2018-12-01 17:57:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 17:57:14,589 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:14,589 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:14,589 INFO L423 AbstractCegarLoop]: === Iteration 9 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:14,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:14,590 INFO L82 PathProgramCache]: Analyzing trace with hash -141069904, now seen corresponding path program 1 times [2018-12-01 17:57:14,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:14,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:57:14,648 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:14,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:14,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:57:14,702 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:14,705 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-12-01 17:57:14,720 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:14,720 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:14,721 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-12-01 17:57:14,722 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 17:57:14,733 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:14,740 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-12-01 17:57:14,743 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 27 [2018-12-01 17:57:14,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-12-01 17:57:14,748 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 17:57:14,758 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:14,762 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:14,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-01 17:57:14,770 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2018-12-01 17:57:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:14,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:57:14,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-12-01 17:57:14,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 17:57:14,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 17:57:14,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-12-01 17:57:14,922 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand 14 states. [2018-12-01 17:57:16,972 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 46 [2018-12-01 17:57:17,099 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-01 17:57:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:17,288 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2018-12-01 17:57:17,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 17:57:17,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-12-01 17:57:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:17,289 INFO L225 Difference]: With dead ends: 109 [2018-12-01 17:57:17,289 INFO L226 Difference]: Without dead ends: 109 [2018-12-01 17:57:17,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-12-01 17:57:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-12-01 17:57:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2018-12-01 17:57:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-12-01 17:57:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2018-12-01 17:57:17,293 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 19 [2018-12-01 17:57:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:17,293 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2018-12-01 17:57:17,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 17:57:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2018-12-01 17:57:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 17:57:17,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:17,294 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:17,294 INFO L423 AbstractCegarLoop]: === Iteration 10 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:17,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:17,294 INFO L82 PathProgramCache]: Analyzing trace with hash 506716446, now seen corresponding path program 1 times [2018-12-01 17:57:17,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:17,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:17,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:17,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:17,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 17:57:17,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 17:57:17,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 17:57:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 17:57:17,314 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand 4 states. [2018-12-01 17:57:17,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:17,331 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2018-12-01 17:57:17,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 17:57:17,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-12-01 17:57:17,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:17,333 INFO L225 Difference]: With dead ends: 86 [2018-12-01 17:57:17,333 INFO L226 Difference]: Without dead ends: 86 [2018-12-01 17:57:17,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 17:57:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-01 17:57:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2018-12-01 17:57:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-12-01 17:57:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2018-12-01 17:57:17,336 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 20 [2018-12-01 17:57:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:17,336 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2018-12-01 17:57:17,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 17:57:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2018-12-01 17:57:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 17:57:17,337 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:17,337 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:17,337 INFO L423 AbstractCegarLoop]: === Iteration 11 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:17,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:17,338 INFO L82 PathProgramCache]: Analyzing trace with hash 508563488, now seen corresponding path program 1 times [2018-12-01 17:57:17,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:17,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:17,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 17:57:17,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:17,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 17:57:17,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 17:57:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 17:57:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:17,376 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2018-12-01 17:57:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:17,413 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2018-12-01 17:57:17,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 17:57:17,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-12-01 17:57:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:17,413 INFO L225 Difference]: With dead ends: 98 [2018-12-01 17:57:17,413 INFO L226 Difference]: Without dead ends: 98 [2018-12-01 17:57:17,414 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-01 17:57:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-12-01 17:57:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2018-12-01 17:57:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-12-01 17:57:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2018-12-01 17:57:17,418 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 20 [2018-12-01 17:57:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:17,418 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2018-12-01 17:57:17,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 17:57:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2018-12-01 17:57:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 17:57:17,419 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:17,419 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:17,419 INFO L423 AbstractCegarLoop]: === Iteration 12 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:17,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:17,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1631778687, now seen corresponding path program 1 times [2018-12-01 17:57:17,419 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:17,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:17,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:17,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:57:17,488 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:17,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:57:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 17:57:17,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 17:57:17,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2018-12-01 17:57:17,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 17:57:17,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 17:57:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-12-01 17:57:17,556 INFO L87 Difference]: Start difference. First operand 90 states and 117 transitions. Second operand 11 states. [2018-12-01 17:57:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:17,624 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2018-12-01 17:57:17,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 17:57:17,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-12-01 17:57:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:17,625 INFO L225 Difference]: With dead ends: 136 [2018-12-01 17:57:17,625 INFO L226 Difference]: Without dead ends: 136 [2018-12-01 17:57:17,625 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-12-01 17:57:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-12-01 17:57:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2018-12-01 17:57:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-12-01 17:57:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2018-12-01 17:57:17,629 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 22 [2018-12-01 17:57:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:17,629 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2018-12-01 17:57:17,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 17:57:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2018-12-01 17:57:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 17:57:17,630 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:17,630 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:17,630 INFO L423 AbstractCegarLoop]: === Iteration 13 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:17,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash 610710333, now seen corresponding path program 1 times [2018-12-01 17:57:17,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:17,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:17,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:17,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:57:17,692 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:17,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:17,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:57:17,726 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:17,727 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-12-01 17:57:17,740 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:17,740 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 17:57:17,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-12-01 17:57:17,741 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 17:57:17,745 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:17,752 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-12-01 17:57:17,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 27 [2018-12-01 17:57:17,758 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-12-01 17:57:17,758 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 17:57:17,765 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:17,769 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 17:57:17,778 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-01 17:57:17,778 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2018-12-01 17:57:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:57:17,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:57:17,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-12-01 17:57:17,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 17:57:17,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 17:57:17,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-12-01 17:57:17,940 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand 15 states. [2018-12-01 17:57:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:18,250 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2018-12-01 17:57:18,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 17:57:18,251 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-12-01 17:57:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:18,251 INFO L225 Difference]: With dead ends: 161 [2018-12-01 17:57:18,251 INFO L226 Difference]: Without dead ends: 161 [2018-12-01 17:57:18,252 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2018-12-01 17:57:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-12-01 17:57:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 113. [2018-12-01 17:57:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-12-01 17:57:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2018-12-01 17:57:18,255 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 22 [2018-12-01 17:57:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:18,255 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2018-12-01 17:57:18,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 17:57:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2018-12-01 17:57:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-01 17:57:18,256 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:18,256 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:18,256 INFO L423 AbstractCegarLoop]: === Iteration 14 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:18,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:18,256 INFO L82 PathProgramCache]: Analyzing trace with hash 475448279, now seen corresponding path program 1 times [2018-12-01 17:57:18,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:18,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:18,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:18,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:18,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 17:57:18,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:57:18,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 17:57:18,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 17:57:18,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 17:57:18,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:57:18,317 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand 6 states. [2018-12-01 17:57:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:18,377 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2018-12-01 17:57:18,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 17:57:18,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-01 17:57:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:18,378 INFO L225 Difference]: With dead ends: 128 [2018-12-01 17:57:18,378 INFO L226 Difference]: Without dead ends: 71 [2018-12-01 17:57:18,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-01 17:57:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-12-01 17:57:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-12-01 17:57:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-01 17:57:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2018-12-01 17:57:18,380 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 24 [2018-12-01 17:57:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:18,380 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2018-12-01 17:57:18,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 17:57:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2018-12-01 17:57:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 17:57:18,380 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:57:18,380 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:57:18,380 INFO L423 AbstractCegarLoop]: === Iteration 15 === [diffErr7REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-01 17:57:18,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:57:18,381 INFO L82 PathProgramCache]: Analyzing trace with hash -979957108, now seen corresponding path program 1 times [2018-12-01 17:57:18,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:57:18,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:57:18,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:18,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:18,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:57:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 17:57:18,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:57:18,489 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/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 [2018-12-01 17:57:18,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:57:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:57:18,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:57:18,511 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-12-01 17:57:18,519 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 27 [2018-12-01 17:57:18,526 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 22 [2018-12-01 17:57:18,526 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-01 17:57:18,550 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 38 [2018-12-01 17:57:18,551 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-12-01 17:57:18,572 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-01 17:57:18,591 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-01 17:57:18,607 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2018-12-01 17:57:18,607 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:22, output treesize:62 [2018-12-01 17:57:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 17:57:18,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:57:18,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-12-01 17:57:18,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-01 17:57:18,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-01 17:57:18,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-12-01 17:57:18,728 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 16 states. [2018-12-01 17:57:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:57:19,045 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2018-12-01 17:57:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 17:57:19,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2018-12-01 17:57:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:57:19,046 INFO L225 Difference]: With dead ends: 100 [2018-12-01 17:57:19,046 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 17:57:19,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2018-12-01 17:57:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 17:57:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 17:57:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 17:57:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 17:57:19,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-12-01 17:57:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:57:19,047 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 17:57:19,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-01 17:57:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 17:57:19,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 17:57:19,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 05:57:19 BoogieIcfgContainer [2018-12-01 17:57:19,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 17:57:19,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 17:57:19,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 17:57:19,051 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 17:57:19,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:13" (3/4) ... [2018-12-01 17:57:19,054 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 17:57:19,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 17:57:19,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-12-01 17:57:19,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-12-01 17:57:19,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure diff [2018-12-01 17:57:19,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 17:57:19,061 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-01 17:57:19,061 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-01 17:57:19,062 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-01 17:57:19,087 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e85211df-d54e-422c-8fd5-a8fa6c766ab8/bin-2019/uautomizer/witness.graphml [2018-12-01 17:57:19,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 17:57:19,088 INFO L168 Benchmark]: Toolchain (without parser) took 6137.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.6 MB in the beginning and 895.0 MB in the end (delta: 55.6 MB). Peak memory consumption was 181.4 MB. Max. memory is 11.5 GB. [2018-12-01 17:57:19,089 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 17:57:19,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -121.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-01 17:57:19,089 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 17:57:19,089 INFO L168 Benchmark]: RCFGBuilder took 255.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-12-01 17:57:19,090 INFO L168 Benchmark]: TraceAbstraction took 5528.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.0 GB in the beginning and 895.0 MB in the end (delta: 127.9 MB). Peak memory consumption was 170.9 MB. Max. memory is 11.5 GB. [2018-12-01 17:57:19,090 INFO L168 Benchmark]: Witness Printer took 36.42 ms. Allocated memory is still 1.2 GB. Free memory is still 895.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 17:57:19,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -121.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 255.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5528.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.0 GB in the beginning and 895.0 MB in the end (delta: 127.9 MB). Peak memory consumption was 170.9 MB. Max. memory is 11.5 GB. * Witness Printer took 36.42 ms. Allocated memory is still 1.2 GB. Free memory is still 895.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 9 error locations. SAFE Result, 5.4s OverallTime, 15 OverallIterations, 2 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 1028 SDslu, 1326 SDs, 0 SdLazy, 903 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 188 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 376 ConstructedInterpolants, 44 QuantifiedInterpolants, 74508 SizeOfPredicates, 40 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 25/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...