./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a16cd99b349cc6bdff463f25bc1978dcd091a75b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a16cd99b349cc6bdff463f25bc1978dcd091a75b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-13 23:29:24,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 23:29:24,404 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 23:29:24,416 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 23:29:24,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 23:29:24,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 23:29:24,419 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 23:29:24,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 23:29:24,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 23:29:24,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 23:29:24,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 23:29:24,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 23:29:24,426 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 23:29:24,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 23:29:24,428 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 23:29:24,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 23:29:24,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 23:29:24,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 23:29:24,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 23:29:24,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 23:29:24,438 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 23:29:24,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 23:29:24,442 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 23:29:24,442 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 23:29:24,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 23:29:24,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 23:29:24,444 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 23:29:24,445 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 23:29:24,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 23:29:24,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 23:29:24,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 23:29:24,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 23:29:24,449 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 23:29:24,449 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 23:29:24,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 23:29:24,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 23:29:24,452 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-13 23:29:24,467 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 23:29:24,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 23:29:24,469 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 23:29:24,469 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 23:29:24,469 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 23:29:24,469 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 23:29:24,469 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 23:29:24,470 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 23:29:24,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 23:29:24,470 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 23:29:24,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 23:29:24,470 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 23:29:24,472 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 23:29:24,472 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 23:29:24,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 23:29:24,472 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 23:29:24,472 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 23:29:24,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 23:29:24,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 23:29:24,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 23:29:24,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 23:29:24,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 23:29:24,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 23:29:24,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 23:29:24,475 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-13 23:29:24,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 23:29:24,476 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2019-01-13 23:29:24,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 23:29:24,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 23:29:24,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 23:29:24,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 23:29:24,552 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 23:29:24,553 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:24,613 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ad0aead/80f47bb725414f248038d020816de5a5/FLAG81c6cb68a [2019-01-13 23:29:25,042 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 23:29:25,043 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:25,059 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ad0aead/80f47bb725414f248038d020816de5a5/FLAG81c6cb68a [2019-01-13 23:29:25,368 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ad0aead/80f47bb725414f248038d020816de5a5 [2019-01-13 23:29:25,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 23:29:25,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 23:29:25,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 23:29:25,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 23:29:25,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 23:29:25,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:25,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b035c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25, skipping insertion in model container [2019-01-13 23:29:25,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:25,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 23:29:25,446 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 23:29:25,825 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 23:29:25,847 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 23:29:25,897 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 23:29:25,966 INFO L195 MainTranslator]: Completed translation [2019-01-13 23:29:25,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25 WrapperNode [2019-01-13 23:29:25,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 23:29:25,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 23:29:25,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 23:29:25,969 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 23:29:26,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... [2019-01-13 23:29:26,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 23:29:26,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 23:29:26,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 23:29:26,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 23:29:26,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-13 23:29:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 23:29:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 23:29:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-13 23:29:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 23:29:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-13 23:29:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-13 23:29:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-13 23:29:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-13 23:29:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-13 23:29:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-13 23:29:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-13 23:29:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-13 23:29:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-13 23:29:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-13 23:29:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-13 23:29:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-13 23:29:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-13 23:29:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-13 23:29:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-13 23:29:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-13 23:29:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-13 23:29:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-13 23:29:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-13 23:29:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-13 23:29:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-13 23:29:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-13 23:29:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-13 23:29:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-13 23:29:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-13 23:29:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-13 23:29:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-13 23:29:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-13 23:29:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-13 23:29:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-13 23:29:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-13 23:29:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-13 23:29:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-13 23:29:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-13 23:29:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-13 23:29:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-13 23:29:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-13 23:29:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-13 23:29:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-13 23:29:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-13 23:29:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-13 23:29:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-13 23:29:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-13 23:29:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-13 23:29:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-13 23:29:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-13 23:29:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-13 23:29:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-13 23:29:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 23:29:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 23:29:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 23:29:26,585 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-13 23:29:26,795 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 23:29:26,795 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-13 23:29:26,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:26 BoogieIcfgContainer [2019-01-13 23:29:26,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 23:29:26,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 23:29:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 23:29:26,801 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 23:29:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 11:29:25" (1/3) ... [2019-01-13 23:29:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c738cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 11:29:26, skipping insertion in model container [2019-01-13 23:29:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:25" (2/3) ... [2019-01-13 23:29:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c738cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 11:29:26, skipping insertion in model container [2019-01-13 23:29:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:26" (3/3) ... [2019-01-13 23:29:26,804 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:26,814 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 23:29:26,822 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-13 23:29:26,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-13 23:29:26,864 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 23:29:26,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 23:29:26,865 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 23:29:26,865 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 23:29:26,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 23:29:26,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 23:29:26,866 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 23:29:26,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 23:29:26,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 23:29:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-01-13 23:29:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-13 23:29:26,898 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:26,899 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:26,902 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 350138613, now seen corresponding path program 1 times [2019-01-13 23:29:26,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:26,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:26,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:26,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:26,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:27,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-13 23:29:27,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-13 23:29:27,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-13 23:29:27,045 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-01-13 23:29:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:27,060 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-01-13 23:29:27,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-13 23:29:27,061 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-01-13 23:29:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:27,071 INFO L225 Difference]: With dead ends: 34 [2019-01-13 23:29:27,071 INFO L226 Difference]: Without dead ends: 27 [2019-01-13 23:29:27,073 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-13 23:29:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-13 23:29:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-01-13 23:29:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-01-13 23:29:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-01-13 23:29:27,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2019-01-13 23:29:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:27,111 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-01-13 23:29:27,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-13 23:29:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-01-13 23:29:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-13 23:29:27,111 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:27,112 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:27,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253782, now seen corresponding path program 1 times [2019-01-13 23:29:27,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:27,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:27,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:27,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:27,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:27,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,180 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2019-01-13 23:29:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:27,314 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-01-13 23:29:27,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:27,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-13 23:29:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:27,316 INFO L225 Difference]: With dead ends: 38 [2019-01-13 23:29:27,316 INFO L226 Difference]: Without dead ends: 38 [2019-01-13 23:29:27,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-13 23:29:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2019-01-13 23:29:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-13 23:29:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-13 23:29:27,322 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2019-01-13 23:29:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:27,322 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-13 23:29:27,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-13 23:29:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-13 23:29:27,323 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:27,323 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:27,324 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253781, now seen corresponding path program 1 times [2019-01-13 23:29:27,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:27,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:27,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:27,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:27,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,492 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2019-01-13 23:29:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:27,584 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-01-13 23:29:27,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:27,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-13 23:29:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:27,586 INFO L225 Difference]: With dead ends: 36 [2019-01-13 23:29:27,586 INFO L226 Difference]: Without dead ends: 36 [2019-01-13 23:29:27,586 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-13 23:29:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2019-01-13 23:29:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-13 23:29:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-01-13 23:29:27,591 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2019-01-13 23:29:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:27,591 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-01-13 23:29:27,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-01-13 23:29:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-13 23:29:27,592 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:27,592 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:27,592 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255141, now seen corresponding path program 1 times [2019-01-13 23:29:27,593 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:27,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:27,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:27,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:27,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,655 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2019-01-13 23:29:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:27,777 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-01-13 23:29:27,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:27,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-13 23:29:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:27,781 INFO L225 Difference]: With dead ends: 35 [2019-01-13 23:29:27,781 INFO L226 Difference]: Without dead ends: 34 [2019-01-13 23:29:27,782 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-01-13 23:29:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-01-13 23:29:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-13 23:29:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-01-13 23:29:27,787 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2019-01-13 23:29:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:27,788 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-01-13 23:29:27,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-01-13 23:29:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-13 23:29:27,789 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:27,789 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:27,789 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255097, now seen corresponding path program 1 times [2019-01-13 23:29:27,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:27,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:27,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,831 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-01-13 23:29:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:27,869 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-01-13 23:29:27,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:27,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-13 23:29:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:27,870 INFO L225 Difference]: With dead ends: 30 [2019-01-13 23:29:27,871 INFO L226 Difference]: Without dead ends: 29 [2019-01-13 23:29:27,871 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-13 23:29:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2019-01-13 23:29:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-13 23:29:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-13 23:29:27,875 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2019-01-13 23:29:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:27,875 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-13 23:29:27,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-13 23:29:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 23:29:27,876 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:27,877 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:27,879 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486843, now seen corresponding path program 1 times [2019-01-13 23:29:27,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:27,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:27,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:27,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:27,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:27,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 23:29:27,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:27,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:27,966 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2019-01-13 23:29:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:28,075 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-01-13 23:29:28,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:28,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-13 23:29:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:28,077 INFO L225 Difference]: With dead ends: 38 [2019-01-13 23:29:28,077 INFO L226 Difference]: Without dead ends: 38 [2019-01-13 23:29:28,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-13 23:29:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-01-13 23:29:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-13 23:29:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-01-13 23:29:28,083 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2019-01-13 23:29:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:28,083 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-01-13 23:29:28,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-01-13 23:29:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 23:29:28,084 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:28,085 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:28,085 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486799, now seen corresponding path program 1 times [2019-01-13 23:29:28,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:28,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:28,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:28,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:28,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:28,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:28,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:28,149 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2019-01-13 23:29:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:28,509 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-01-13 23:29:28,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:28,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-13 23:29:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:28,511 INFO L225 Difference]: With dead ends: 31 [2019-01-13 23:29:28,512 INFO L226 Difference]: Without dead ends: 31 [2019-01-13 23:29:28,512 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-01-13 23:29:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-01-13 23:29:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-13 23:29:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-01-13 23:29:28,516 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2019-01-13 23:29:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:28,517 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-01-13 23:29:28,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-01-13 23:29:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 23:29:28,518 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:28,518 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:28,518 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:28,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486798, now seen corresponding path program 1 times [2019-01-13 23:29:28,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:28,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:28,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:28,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:28,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:28,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:28,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:28,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:28,626 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2019-01-13 23:29:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:28,743 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-01-13 23:29:28,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:28,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-13 23:29:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:28,746 INFO L225 Difference]: With dead ends: 33 [2019-01-13 23:29:28,746 INFO L226 Difference]: Without dead ends: 33 [2019-01-13 23:29:28,747 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-01-13 23:29:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-01-13 23:29:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-13 23:29:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-01-13 23:29:28,750 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2019-01-13 23:29:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:28,751 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-01-13 23:29:28,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-01-13 23:29:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-13 23:29:28,752 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:28,752 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:28,752 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:28,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1315071203, now seen corresponding path program 1 times [2019-01-13 23:29:28,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 23:29:28,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 23:29:28,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:28,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 23:29:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 23:29:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 23:29:28,830 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-13 23:29:28,843 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-13 23:29:28,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 11:29:28 BoogieIcfgContainer [2019-01-13 23:29:28,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 23:29:28,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 23:29:28,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 23:29:28,863 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 23:29:28,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:26" (3/4) ... [2019-01-13 23:29:28,870 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-13 23:29:28,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 23:29:28,872 INFO L168 Benchmark]: Toolchain (without parser) took 3498.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 951.4 MB in the beginning and 980.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 95.5 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:28,876 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 23:29:28,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.27 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:28,882 INFO L168 Benchmark]: Boogie Preprocessor took 124.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:28,884 INFO L168 Benchmark]: RCFGBuilder took 703.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:28,885 INFO L168 Benchmark]: TraceAbstraction took 2063.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.7 MB in the end (delta: 93.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:28,887 INFO L168 Benchmark]: Witness Printer took 8.25 ms. Allocated memory is still 1.2 GB. Free memory is still 980.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 23:29:28,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 592.27 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 124.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 703.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2063.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.7 MB in the end (delta: 93.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. * Witness Printer took 8.25 ms. Allocated memory is still 1.2 GB. Free memory is still 980.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={2:0}, p={0:0}, t={2:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={2:0}, p={0:0}, t={2:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={2:0}, p={0:0}, t={2:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={2:0}, p={0:0}, t={2:0}] [L634] p = t VAL [malloc(sizeof(struct node))={2:0}, p={2:0}, t={2:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={2:0}, p={2:0}, t={2:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={2:0}, p={2:0}, p->h=1, t={2:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={2:0}, p={2:0}, p->n={0:0}, t={2:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={2:0}, p={0:0}, t={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 9 error locations. UNSAFE Result, 2.0s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 177 SDtfs, 132 SDslu, 88 SDs, 0 SdLazy, 146 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, 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, 8 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-13 23:29:31,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 23:29:31,240 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 23:29:31,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 23:29:31,252 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 23:29:31,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 23:29:31,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 23:29:31,256 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 23:29:31,258 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 23:29:31,259 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 23:29:31,260 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 23:29:31,260 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 23:29:31,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 23:29:31,263 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 23:29:31,264 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 23:29:31,265 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 23:29:31,266 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 23:29:31,268 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 23:29:31,270 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 23:29:31,272 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 23:29:31,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 23:29:31,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 23:29:31,277 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 23:29:31,278 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 23:29:31,278 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 23:29:31,279 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 23:29:31,280 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 23:29:31,281 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 23:29:31,282 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 23:29:31,283 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 23:29:31,284 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 23:29:31,285 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 23:29:31,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 23:29:31,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 23:29:31,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 23:29:31,287 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 23:29:31,288 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-01-13 23:29:31,303 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 23:29:31,303 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 23:29:31,305 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 23:29:31,305 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 23:29:31,305 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 23:29:31,305 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 23:29:31,305 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 23:29:31,306 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 23:29:31,306 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 23:29:31,307 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 23:29:31,308 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-13 23:29:31,308 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-13 23:29:31,308 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 23:29:31,308 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 23:29:31,308 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 23:29:31,309 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 23:29:31,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 23:29:31,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 23:29:31,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 23:29:31,311 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 23:29:31,311 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 23:29:31,311 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-13 23:29:31,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 23:29:31,311 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-13 23:29:31,312 INFO L133 SettingsManager]: * Logic for external solver=AUFBV 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2019-01-13 23:29:31,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 23:29:31,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 23:29:31,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 23:29:31,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 23:29:31,369 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 23:29:31,370 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:31,432 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09bbfd68/bff0064cacf545d7890223ab3868fa9c/FLAGaf74886b5 [2019-01-13 23:29:31,908 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 23:29:31,909 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:31,923 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09bbfd68/bff0064cacf545d7890223ab3868fa9c/FLAGaf74886b5 [2019-01-13 23:29:32,212 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09bbfd68/bff0064cacf545d7890223ab3868fa9c [2019-01-13 23:29:32,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 23:29:32,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 23:29:32,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 23:29:32,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 23:29:32,229 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 23:29:32,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a409c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32, skipping insertion in model container [2019-01-13 23:29:32,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 23:29:32,286 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 23:29:32,707 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 23:29:32,732 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 23:29:32,877 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 23:29:32,939 INFO L195 MainTranslator]: Completed translation [2019-01-13 23:29:32,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32 WrapperNode [2019-01-13 23:29:32,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 23:29:32,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 23:29:32,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 23:29:32,941 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 23:29:32,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:32,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:33,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:33,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... [2019-01-13 23:29:33,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 23:29:33,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 23:29:33,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 23:29:33,028 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 23:29:33,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-13 23:29:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 23:29:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 23:29:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-01-13 23:29:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-13 23:29:33,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 23:29:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-13 23:29:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-13 23:29:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-13 23:29:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-13 23:29:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-13 23:29:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-13 23:29:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-13 23:29:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-13 23:29:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-13 23:29:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-13 23:29:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-13 23:29:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-13 23:29:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-13 23:29:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-13 23:29:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-13 23:29:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-13 23:29:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-13 23:29:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-13 23:29:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-13 23:29:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-13 23:29:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-13 23:29:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-13 23:29:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-13 23:29:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-13 23:29:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-13 23:29:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-13 23:29:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-13 23:29:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-13 23:29:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-13 23:29:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-13 23:29:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-13 23:29:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-13 23:29:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-13 23:29:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-13 23:29:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-13 23:29:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-13 23:29:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-13 23:29:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 23:29:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-13 23:29:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-01-13 23:29:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-13 23:29:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-13 23:29:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-13 23:29:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 23:29:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 23:29:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-01-13 23:29:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 23:29:33,564 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-13 23:29:33,861 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 23:29:33,861 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-13 23:29:33,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:33 BoogieIcfgContainer [2019-01-13 23:29:33,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 23:29:33,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 23:29:33,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 23:29:33,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 23:29:33,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 11:29:32" (1/3) ... [2019-01-13 23:29:33,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3a7b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 11:29:33, skipping insertion in model container [2019-01-13 23:29:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 11:29:32" (2/3) ... [2019-01-13 23:29:33,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3a7b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 11:29:33, skipping insertion in model container [2019-01-13 23:29:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:33" (3/3) ... [2019-01-13 23:29:33,871 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2019-01-13 23:29:33,881 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 23:29:33,887 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-13 23:29:33,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-13 23:29:33,926 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 23:29:33,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 23:29:33,927 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 23:29:33,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 23:29:33,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 23:29:33,929 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 23:29:33,929 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 23:29:33,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 23:29:33,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 23:29:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-01-13 23:29:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-13 23:29:33,953 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:33,954 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:33,957 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:33,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:33,963 INFO L82 PathProgramCache]: Analyzing trace with hash -494811372, now seen corresponding path program 1 times [2019-01-13 23:29:33,968 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:33,969 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:33,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:34,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:34,095 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:34,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:34,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:34,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:34,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:34,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,121 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-01-13 23:29:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:34,220 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-01-13 23:29:34,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:34,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-13 23:29:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:34,231 INFO L225 Difference]: With dead ends: 44 [2019-01-13 23:29:34,231 INFO L226 Difference]: Without dead ends: 36 [2019-01-13 23:29:34,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-13 23:29:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-01-13 23:29:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-13 23:29:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-01-13 23:29:34,272 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 9 [2019-01-13 23:29:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:34,272 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-01-13 23:29:34,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-01-13 23:29:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-13 23:29:34,273 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:34,273 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:34,274 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -494811416, now seen corresponding path program 1 times [2019-01-13 23:29:34,275 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:34,275 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:34,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:34,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:34,338 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:34,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:34,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:34,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:34,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,344 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2019-01-13 23:29:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:34,502 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-01-13 23:29:34,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:34,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-13 23:29:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:34,505 INFO L225 Difference]: With dead ends: 29 [2019-01-13 23:29:34,506 INFO L226 Difference]: Without dead ends: 27 [2019-01-13 23:29:34,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-13 23:29:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-01-13 23:29:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-01-13 23:29:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-01-13 23:29:34,514 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2019-01-13 23:29:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:34,514 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-01-13 23:29:34,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-01-13 23:29:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-13 23:29:34,515 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:34,515 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:34,515 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:34,516 INFO L82 PathProgramCache]: Analyzing trace with hash -494810057, now seen corresponding path program 1 times [2019-01-13 23:29:34,516 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:34,516 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:34,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:34,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:34,620 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-13 23:29:34,623 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:34,650 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:34,650 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-01-13 23:29:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:34,679 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:34,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:34,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:34,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:34,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:34,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,685 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2019-01-13 23:29:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:34,855 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-01-13 23:29:34,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:34,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-13 23:29:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:34,857 INFO L225 Difference]: With dead ends: 25 [2019-01-13 23:29:34,857 INFO L226 Difference]: Without dead ends: 25 [2019-01-13 23:29:34,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-01-13 23:29:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-01-13 23:29:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-13 23:29:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-13 23:29:34,863 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2019-01-13 23:29:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:34,864 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-13 23:29:34,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-13 23:29:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-13 23:29:34,866 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:34,866 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:34,866 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:34,867 INFO L82 PathProgramCache]: Analyzing trace with hash -494810056, now seen corresponding path program 1 times [2019-01-13 23:29:34,868 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:34,868 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:34,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:34,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:34,976 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-13 23:29:34,977 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:35,013 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:35,013 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-13 23:29:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:35,030 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:35,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:35,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 23:29:35,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 23:29:35,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 23:29:35,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:35,035 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2019-01-13 23:29:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:35,169 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-01-13 23:29:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 23:29:35,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-13 23:29:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:35,171 INFO L225 Difference]: With dead ends: 23 [2019-01-13 23:29:35,172 INFO L226 Difference]: Without dead ends: 23 [2019-01-13 23:29:35,172 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 23:29:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-13 23:29:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-13 23:29:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-13 23:29:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-01-13 23:29:35,176 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2019-01-13 23:29:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:35,176 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-01-13 23:29:35,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 23:29:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-01-13 23:29:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-13 23:29:35,177 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:35,177 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:35,178 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:35,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 13871934, now seen corresponding path program 1 times [2019-01-13 23:29:35,179 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:35,179 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:35,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:35,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:35,282 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-13 23:29:35,282 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:35,309 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:35,309 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-01-13 23:29:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:35,442 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:35,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:35,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:35,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:35,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:35,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:35,450 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2019-01-13 23:29:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:35,850 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-01-13 23:29:35,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:35,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-13 23:29:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:35,852 INFO L225 Difference]: With dead ends: 31 [2019-01-13 23:29:35,852 INFO L226 Difference]: Without dead ends: 31 [2019-01-13 23:29:35,853 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-01-13 23:29:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2019-01-13 23:29:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-13 23:29:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-01-13 23:29:35,857 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2019-01-13 23:29:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:35,858 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-01-13 23:29:35,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-01-13 23:29:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-13 23:29:35,859 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:35,859 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:35,859 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash 13871935, now seen corresponding path program 1 times [2019-01-13 23:29:35,860 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:35,860 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:35,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:35,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:35,961 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-13 23:29:35,962 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,015 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-13 23:29:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:36,250 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:36,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:36,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 23:29:36,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:36,255 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-01-13 23:29:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:36,547 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-01-13 23:29:36,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:36,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-13 23:29:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:36,550 INFO L225 Difference]: With dead ends: 33 [2019-01-13 23:29:36,550 INFO L226 Difference]: Without dead ends: 33 [2019-01-13 23:29:36,551 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-01-13 23:29:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2019-01-13 23:29:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-13 23:29:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-01-13 23:29:36,558 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2019-01-13 23:29:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:36,558 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-01-13 23:29:36,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-01-13 23:29:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-13 23:29:36,563 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:36,563 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:36,563 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash 13871890, now seen corresponding path program 1 times [2019-01-13 23:29:36,564 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:36,564 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:36,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:36,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:36,645 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-13 23:29:36,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 23:29:36,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 23:29:36,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 23:29:36,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 23:29:36,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 23:29:36,650 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2019-01-13 23:29:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:36,771 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-01-13 23:29:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 23:29:36,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-13 23:29:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:36,773 INFO L225 Difference]: With dead ends: 31 [2019-01-13 23:29:36,773 INFO L226 Difference]: Without dead ends: 31 [2019-01-13 23:29:36,774 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-13 23:29:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-01-13 23:29:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-01-13 23:29:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-13 23:29:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-01-13 23:29:36,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2019-01-13 23:29:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:36,779 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-01-13 23:29:36,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 23:29:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-01-13 23:29:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-13 23:29:36,780 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:36,780 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:36,781 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1021026590, now seen corresponding path program 1 times [2019-01-13 23:29:36,781 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:36,782 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:36,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 23:29:36,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 23:29:36,921 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 10 [2019-01-13 23:29:36,931 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2019-01-13 23:29:36,932 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,935 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,959 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 10 [2019-01-13 23:29:36,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2019-01-13 23:29:36,965 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,969 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:36,984 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-01-13 23:29:37,074 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 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 15 treesize of output 11 [2019-01-13 23:29:37,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2019-01-13 23:29:37,092 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:37,102 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:37,120 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 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 15 treesize of output 11 [2019-01-13 23:29:37,125 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2019-01-13 23:29:37,125 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-13 23:29:37,127 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:37,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-13 23:29:37,132 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-01-13 23:29:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:37,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-13 23:29:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 23:29:37,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-13 23:29:37,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2019-01-13 23:29:37,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-13 23:29:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-13 23:29:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-01-13 23:29:37,302 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2019-01-13 23:29:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 23:29:37,828 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2019-01-13 23:29:37,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-13 23:29:37,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-01-13 23:29:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 23:29:37,832 INFO L225 Difference]: With dead ends: 41 [2019-01-13 23:29:37,832 INFO L226 Difference]: Without dead ends: 41 [2019-01-13 23:29:37,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-01-13 23:29:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-01-13 23:29:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-01-13 23:29:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-01-13 23:29:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-01-13 23:29:37,837 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 19 [2019-01-13 23:29:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 23:29:37,838 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-01-13 23:29:37,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-13 23:29:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-01-13 23:29:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-13 23:29:37,839 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 23:29:37,839 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 23:29:37,839 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-01-13 23:29:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 23:29:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1021026634, now seen corresponding path program 1 times [2019-01-13 23:29:37,840 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-13 23:29:37,840 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-13 23:29:37,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 23:29:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 23:29:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 23:29:38,034 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-13 23:29:38,054 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-13 23:29:38,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 11:29:38 BoogieIcfgContainer [2019-01-13 23:29:38,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 23:29:38,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 23:29:38,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 23:29:38,072 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 23:29:38,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 11:29:33" (3/4) ... [2019-01-13 23:29:38,077 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-13 23:29:38,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 23:29:38,078 INFO L168 Benchmark]: Toolchain (without parser) took 5860.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 871.3 MB in the end (delta: 80.1 MB). Peak memory consumption was 223.2 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:38,080 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 23:29:38,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:38,090 INFO L168 Benchmark]: Boogie Preprocessor took 83.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 23:29:38,091 INFO L168 Benchmark]: RCFGBuilder took 838.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:38,092 INFO L168 Benchmark]: TraceAbstraction took 4207.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.3 MB in the end (delta: 199.1 MB). Peak memory consumption was 199.1 MB. Max. memory is 11.5 GB. [2019-01-13 23:29:38,093 INFO L168 Benchmark]: Witness Printer took 5.65 ms. Allocated memory is still 1.2 GB. Free memory is still 871.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 23:29:38,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 719.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 838.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4207.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.3 MB in the end (delta: 199.1 MB). Peak memory consumption was 199.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.65 ms. Allocated memory is still 1.2 GB. Free memory is still 871.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1073741824:0}, p={0:0}, t={1073741824:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1073741824:0}, p={0:0}, t={1073741824:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={1073741824:0}, p={0:0}, t={1073741824:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={1073741824:0}, p={0:0}, t={1073741824:0}] [L634] p = t VAL [malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, t={1073741824:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, t={1073741824:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=1, t={1073741824:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->n={0:0}, t={1073741824:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1073741824:0}, p={0:0}, t={1073741824:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 9 error locations. UNSAFE Result, 4.1s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 140 SDtfs, 140 SDslu, 149 SDs, 0 SdLazy, 213 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=8, 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, 8 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 9109 SizeOfPredicates, 27 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 5/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...