./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/list_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/list_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 45292d949331e02d780a7679ac12098a89a953bb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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/list_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 45292d949331e02d780a7679ac12098a89a953bb ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2019-01-14 19:40:29,016 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 19:40:29,018 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 19:40:29,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 19:40:29,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 19:40:29,033 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 19:40:29,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 19:40:29,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 19:40:29,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 19:40:29,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 19:40:29,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 19:40:29,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 19:40:29,043 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 19:40:29,044 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 19:40:29,045 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 19:40:29,046 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 19:40:29,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 19:40:29,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 19:40:29,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 19:40:29,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 19:40:29,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 19:40:29,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 19:40:29,059 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 19:40:29,059 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 19:40:29,059 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 19:40:29,060 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 19:40:29,062 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 19:40:29,062 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 19:40:29,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 19:40:29,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 19:40:29,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 19:40:29,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 19:40:29,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 19:40:29,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 19:40:29,068 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 19:40:29,069 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 19:40:29,069 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 19:40:29,090 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 19:40:29,091 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 19:40:29,095 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 19:40:29,095 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 19:40:29,095 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 19:40:29,095 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 19:40:29,095 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 19:40:29,096 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 19:40:29,097 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 19:40:29,097 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 19:40:29,098 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 19:40:29,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 19:40:29,098 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 19:40:29,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 19:40:29,099 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 19:40:29,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:40:29,100 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 19:40:29,101 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 19:40:29,101 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 19:40:29,101 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 19:40:29,101 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 -> 45292d949331e02d780a7679ac12098a89a953bb [2019-01-14 19:40:29,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 19:40:29,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 19:40:29,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 19:40:29,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 19:40:29,164 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 19:40:29,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:29,224 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6c74434/264fe5fc11584a0a91499dd074650b05/FLAGe30150c27 [2019-01-14 19:40:29,704 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 19:40:29,705 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:29,720 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6c74434/264fe5fc11584a0a91499dd074650b05/FLAGe30150c27 [2019-01-14 19:40:30,029 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6c74434/264fe5fc11584a0a91499dd074650b05 [2019-01-14 19:40:30,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 19:40:30,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 19:40:30,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:30,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 19:40:30,039 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 19:40:30,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d57bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30, skipping insertion in model container [2019-01-14 19:40:30,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 19:40:30,100 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 19:40:30,471 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:30,482 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 19:40:30,602 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:30,657 INFO L195 MainTranslator]: Completed translation [2019-01-14 19:40:30,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30 WrapperNode [2019-01-14 19:40:30,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:30,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 19:40:30,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 19:40:30,659 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 19:40:30,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (1/1) ... [2019-01-14 19:40:30,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 19:40:30,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 19:40:30,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 19:40:30,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 19:40:30,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (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 [2019-01-14 19:40:30,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 19:40:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 19:40:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-14 19:40:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 19:40:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 19:40:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 19:40:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 19:40:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 19:40:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 19:40:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 19:40:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 19:40:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 19:40:30,787 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 19:40:30,788 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 19:40:30,788 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 19:40:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 19:40:30,790 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 19:40:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 19:40:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 19:40:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 19:40:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 19:40:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 19:40:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 19:40:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 19:40:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 19:40:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 19:40:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 19:40:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 19:40:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 19:40:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 19:40:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 19:40:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 19:40:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 19:40:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 19:40:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 19:40:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 19:40:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 19:40:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 19:40:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 19:40:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 19:40:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 19:40:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 19:40:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 19:40:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 19:40:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 19:40:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 19:40:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 19:40:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 19:40:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 19:40:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 19:40:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 19:40:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 19:40:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-14 19:40:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 19:40:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 19:40:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 19:40:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 19:40:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 19:40:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 19:40:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 19:40:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 19:40:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 19:40:31,162 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-14 19:40:31,644 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 19:40:31,644 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 19:40:31,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:31 BoogieIcfgContainer [2019-01-14 19:40:31,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 19:40:31,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 19:40:31,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 19:40:31,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 19:40:31,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 07:40:30" (1/3) ... [2019-01-14 19:40:31,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4803b15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:31, skipping insertion in model container [2019-01-14 19:40:31,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:30" (2/3) ... [2019-01-14 19:40:31,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4803b15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:31, skipping insertion in model container [2019-01-14 19:40:31,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:31" (3/3) ... [2019-01-14 19:40:31,653 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:31,663 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 19:40:31,671 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2019-01-14 19:40:31,687 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2019-01-14 19:40:31,712 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 19:40:31,713 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 19:40:31,713 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 19:40:31,714 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 19:40:31,714 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 19:40:31,714 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 19:40:31,714 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 19:40:31,715 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 19:40:31,715 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 19:40:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2019-01-14 19:40:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:40:31,743 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:31,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:31,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532229, now seen corresponding path program 1 times [2019-01-14 19:40:31,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:31,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:31,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:31,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:31,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:31,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:31,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:31,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:31,957 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2019-01-14 19:40:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:32,562 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2019-01-14 19:40:32,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:32,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 19:40:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:32,574 INFO L225 Difference]: With dead ends: 79 [2019-01-14 19:40:32,574 INFO L226 Difference]: Without dead ends: 70 [2019-01-14 19:40:32,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-01-14 19:40:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2019-01-14 19:40:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-01-14 19:40:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-01-14 19:40:32,622 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 11 [2019-01-14 19:40:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:32,623 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-01-14 19:40:32,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-01-14 19:40:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:40:32,624 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:32,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:32,625 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2132532228, now seen corresponding path program 1 times [2019-01-14 19:40:32,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:32,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:32,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:32,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:32,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:32,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:32,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:32,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:32,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:32,925 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 4 states. [2019-01-14 19:40:33,088 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-14 19:40:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:33,560 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2019-01-14 19:40:33,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:33,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 19:40:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:33,563 INFO L225 Difference]: With dead ends: 88 [2019-01-14 19:40:33,563 INFO L226 Difference]: Without dead ends: 88 [2019-01-14 19:40:33,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-01-14 19:40:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2019-01-14 19:40:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-01-14 19:40:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2019-01-14 19:40:33,578 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 11 [2019-01-14 19:40:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:33,579 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2019-01-14 19:40:33,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2019-01-14 19:40:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 19:40:33,580 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:33,580 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:33,581 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2029512520, now seen corresponding path program 1 times [2019-01-14 19:40:33,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:33,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:33,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:33,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:33,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:33,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:33,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-14 19:40:33,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:33,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:33,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:33,750 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2019-01-14 19:40:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:34,028 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2019-01-14 19:40:34,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 19:40:34,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-01-14 19:40:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:34,032 INFO L225 Difference]: With dead ends: 112 [2019-01-14 19:40:34,032 INFO L226 Difference]: Without dead ends: 112 [2019-01-14 19:40:34,033 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-01-14 19:40:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-01-14 19:40:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2019-01-14 19:40:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-01-14 19:40:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2019-01-14 19:40:34,042 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 19 [2019-01-14 19:40:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:34,042 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2019-01-14 19:40:34,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2019-01-14 19:40:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 19:40:34,044 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:34,044 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:34,044 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615762, now seen corresponding path program 1 times [2019-01-14 19:40:34,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:34,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:34,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:34,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:34,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:34,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:34,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:34,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:34,172 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2019-01-14 19:40:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:34,516 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2019-01-14 19:40:34,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 19:40:34,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-01-14 19:40:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:34,521 INFO L225 Difference]: With dead ends: 105 [2019-01-14 19:40:34,521 INFO L226 Difference]: Without dead ends: 105 [2019-01-14 19:40:34,522 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 19:40:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-01-14 19:40:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2019-01-14 19:40:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-01-14 19:40:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2019-01-14 19:40:34,529 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2019-01-14 19:40:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:34,529 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2019-01-14 19:40:34,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2019-01-14 19:40:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 19:40:34,531 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:34,531 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:34,531 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:34,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1001615761, now seen corresponding path program 1 times [2019-01-14 19:40:34,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:34,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:34,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:34,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:34,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:34,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:34,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:34,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:34,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:34,666 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2019-01-14 19:40:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:35,315 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2019-01-14 19:40:35,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 19:40:35,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-01-14 19:40:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:35,317 INFO L225 Difference]: With dead ends: 106 [2019-01-14 19:40:35,318 INFO L226 Difference]: Without dead ends: 106 [2019-01-14 19:40:35,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-01-14 19:40:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-01-14 19:40:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2019-01-14 19:40:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-01-14 19:40:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2019-01-14 19:40:35,326 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 19 [2019-01-14 19:40:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:35,326 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2019-01-14 19:40:35,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2019-01-14 19:40:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-14 19:40:35,327 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:35,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:35,328 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash 398800981, now seen corresponding path program 1 times [2019-01-14 19:40:35,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:35,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:35,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:35,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:35,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:35,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-14 19:40:35,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:35,417 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2019-01-14 19:40:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:35,638 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2019-01-14 19:40:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 19:40:35,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-01-14 19:40:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:35,641 INFO L225 Difference]: With dead ends: 101 [2019-01-14 19:40:35,641 INFO L226 Difference]: Without dead ends: 101 [2019-01-14 19:40:35,642 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-01-14 19:40:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-01-14 19:40:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2019-01-14 19:40:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-01-14 19:40:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2019-01-14 19:40:35,648 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 21 [2019-01-14 19:40:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:35,648 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2019-01-14 19:40:35,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2019-01-14 19:40:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-14 19:40:35,649 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:35,649 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] [2019-01-14 19:40:35,649 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash 102986752, now seen corresponding path program 1 times [2019-01-14 19:40:35,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:35,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:35,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:35,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:35,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:35,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:35,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:35,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:35,736 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2019-01-14 19:40:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:35,969 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2019-01-14 19:40:35,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 19:40:35,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-01-14 19:40:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:35,971 INFO L225 Difference]: With dead ends: 86 [2019-01-14 19:40:35,972 INFO L226 Difference]: Without dead ends: 86 [2019-01-14 19:40:35,972 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 19:40:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-01-14 19:40:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2019-01-14 19:40:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-01-14 19:40:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2019-01-14 19:40:35,978 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 21 [2019-01-14 19:40:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:35,979 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2019-01-14 19:40:35,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2019-01-14 19:40:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-14 19:40:35,980 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:35,980 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] [2019-01-14 19:40:35,981 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash 102986753, now seen corresponding path program 1 times [2019-01-14 19:40:35,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:35,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:35,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:35,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:36,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:36,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:36,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:36,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:36,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:36,101 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2019-01-14 19:40:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:36,700 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2019-01-14 19:40:36,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 19:40:36,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-01-14 19:40:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:36,702 INFO L225 Difference]: With dead ends: 83 [2019-01-14 19:40:36,702 INFO L226 Difference]: Without dead ends: 83 [2019-01-14 19:40:36,702 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-01-14 19:40:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-01-14 19:40:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2019-01-14 19:40:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-01-14 19:40:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2019-01-14 19:40:36,710 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 21 [2019-01-14 19:40:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:36,712 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-01-14 19:40:36,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2019-01-14 19:40:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-14 19:40:36,713 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:36,713 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:36,713 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION]=== [2019-01-14 19:40:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash -523696583, now seen corresponding path program 1 times [2019-01-14 19:40:36,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:36,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:36,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:36,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:36,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:36,780 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 19:40:36,799 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 19:40:36,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 07:40:36 BoogieIcfgContainer [2019-01-14 19:40:36,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 19:40:36,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 19:40:36,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 19:40:36,821 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 19:40:36,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:31" (3/4) ... [2019-01-14 19:40:36,826 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 19:40:36,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 19:40:36,827 INFO L168 Benchmark]: Toolchain (without parser) took 6793.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 951.3 MB in the beginning and 1.2 GB in the end (delta: -225.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:36,828 INFO L168 Benchmark]: CDTParser took 0.58 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. [2019-01-14 19:40:36,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:36,830 INFO L168 Benchmark]: Boogie Preprocessor took 66.89 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. [2019-01-14 19:40:36,831 INFO L168 Benchmark]: RCFGBuilder took 920.56 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:36,832 INFO L168 Benchmark]: TraceAbstraction took 5171.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:36,832 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:36,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 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 622.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.89 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 920.56 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5171.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. 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 a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L628] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L629] List t; [L630] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L646] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L647] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 25 error locations. UNSAFE Result, 5.1s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 349 SDtfs, 596 SDslu, 757 SDs, 0 SdLazy, 1010 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=4, 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, 146 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 8760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 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 [2019-01-14 19:40:39,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 19:40:39,019 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 19:40:39,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 19:40:39,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 19:40:39,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 19:40:39,041 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 19:40:39,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 19:40:39,045 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 19:40:39,046 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 19:40:39,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 19:40:39,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 19:40:39,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 19:40:39,050 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 19:40:39,053 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 19:40:39,054 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 19:40:39,055 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 19:40:39,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 19:40:39,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 19:40:39,062 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 19:40:39,064 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 19:40:39,065 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 19:40:39,068 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 19:40:39,068 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 19:40:39,068 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 19:40:39,069 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 19:40:39,070 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 19:40:39,072 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 19:40:39,072 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 19:40:39,073 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 19:40:39,074 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 19:40:39,075 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 19:40:39,075 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 19:40:39,075 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 19:40:39,076 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 19:40:39,078 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 19:40:39,078 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-01-14 19:40:39,093 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 19:40:39,093 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 19:40:39,094 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 19:40:39,095 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 19:40:39,095 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 19:40:39,096 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 19:40:39,096 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 19:40:39,096 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 19:40:39,096 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 19:40:39,096 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 19:40:39,096 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-14 19:40:39,097 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-14 19:40:39,098 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 19:40:39,099 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 19:40:39,100 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 19:40:39,100 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 19:40:39,100 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 19:40:39,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:40:39,100 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 19:40:39,100 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 19:40:39,101 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-14 19:40:39,102 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 19:40:39,102 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-14 19:40:39,102 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 -> 45292d949331e02d780a7679ac12098a89a953bb [2019-01-14 19:40:39,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 19:40:39,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 19:40:39,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 19:40:39,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 19:40:39,174 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 19:40:39,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:39,240 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67045b26/592ca8e4e2ac4e718f4dec59e3d6c971/FLAG53961d32c [2019-01-14 19:40:39,686 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 19:40:39,687 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:39,703 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67045b26/592ca8e4e2ac4e718f4dec59e3d6c971/FLAG53961d32c [2019-01-14 19:40:40,016 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67045b26/592ca8e4e2ac4e718f4dec59e3d6c971 [2019-01-14 19:40:40,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 19:40:40,021 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 19:40:40,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:40,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 19:40:40,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 19:40:40,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4b7e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40, skipping insertion in model container [2019-01-14 19:40:40,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 19:40:40,086 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 19:40:40,465 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:40,490 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 19:40:40,569 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:40,703 INFO L195 MainTranslator]: Completed translation [2019-01-14 19:40:40,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40 WrapperNode [2019-01-14 19:40:40,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:40,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 19:40:40,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 19:40:40,705 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 19:40:40,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (1/1) ... [2019-01-14 19:40:40,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 19:40:40,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 19:40:40,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 19:40:40,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 19:40:40,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (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 [2019-01-14 19:40:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 19:40:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 19:40:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-01-14 19:40:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-14 19:40:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 19:40:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 19:40:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 19:40:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 19:40:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 19:40:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 19:40:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 19:40:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 19:40:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 19:40:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 19:40:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 19:40:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 19:40:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 19:40:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 19:40:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 19:40:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 19:40:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 19:40:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 19:40:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 19:40:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 19:40:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 19:40:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 19:40:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 19:40:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 19:40:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 19:40:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 19:40:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 19:40:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 19:40:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 19:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 19:40:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 19:40:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 19:40:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 19:40:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 19:40:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 19:40:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 19:40:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 19:40:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 19:40:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 19:40:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 19:40:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 19:40:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-01-14 19:40:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 19:40:41,350 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-14 19:40:41,867 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 19:40:41,867 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 19:40:41,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:41 BoogieIcfgContainer [2019-01-14 19:40:41,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 19:40:41,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 19:40:41,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 19:40:41,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 19:40:41,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 07:40:40" (1/3) ... [2019-01-14 19:40:41,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fe195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:41, skipping insertion in model container [2019-01-14 19:40:41,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:40" (2/3) ... [2019-01-14 19:40:41,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fe195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:41, skipping insertion in model container [2019-01-14 19:40:41,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:41" (3/3) ... [2019-01-14 19:40:41,877 INFO L112 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:41,888 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 19:40:41,897 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2019-01-14 19:40:41,916 INFO L257 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2019-01-14 19:40:41,945 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 19:40:41,946 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 19:40:41,947 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 19:40:41,949 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 19:40:41,949 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 19:40:41,949 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 19:40:41,949 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 19:40:41,950 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 19:40:41,950 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 19:40:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2019-01-14 19:40:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:41,978 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:41,979 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:41,982 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2113645311, now seen corresponding path program 1 times [2019-01-14 19:40:41,993 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:41,994 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 [2019-01-14 19:40:42,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:42,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:42,166 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 [2019-01-14 19:40:42,169 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:42,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:42,197 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-01-14 19:40:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:42,279 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:42,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:42,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:42,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:42,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:42,310 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2019-01-14 19:40:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:43,116 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2019-01-14 19:40:43,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:43,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-01-14 19:40:43,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:43,130 INFO L225 Difference]: With dead ends: 75 [2019-01-14 19:40:43,131 INFO L226 Difference]: Without dead ends: 66 [2019-01-14 19:40:43,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-01-14 19:40:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2019-01-14 19:40:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-01-14 19:40:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2019-01-14 19:40:43,189 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 10 [2019-01-14 19:40:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:43,189 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2019-01-14 19:40:43,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:43,190 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2019-01-14 19:40:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:43,190 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:43,190 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:43,191 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2113645312, now seen corresponding path program 1 times [2019-01-14 19:40:43,192 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:43,193 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 [2019-01-14 19:40:43,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:43,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:43,289 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 [2019-01-14 19:40:43,290 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:43,359 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:43,360 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-14 19:40:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:43,476 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:43,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:43,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:43,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:43,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:43,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:43,484 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 4 states. [2019-01-14 19:40:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:44,103 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2019-01-14 19:40:44,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:44,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-01-14 19:40:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:44,107 INFO L225 Difference]: With dead ends: 84 [2019-01-14 19:40:44,107 INFO L226 Difference]: Without dead ends: 84 [2019-01-14 19:40:44,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-01-14 19:40:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2019-01-14 19:40:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-01-14 19:40:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2019-01-14 19:40:44,119 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 10 [2019-01-14 19:40:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:44,119 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2019-01-14 19:40:44,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2019-01-14 19:40:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 19:40:44,120 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:44,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:44,121 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1730022228, now seen corresponding path program 1 times [2019-01-14 19:40:44,122 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:44,122 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 [2019-01-14 19:40:44,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:44,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:44,271 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 11 treesize of output 8 [2019-01-14 19:40:44,278 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 8 treesize of output 7 [2019-01-14 19:40:44,279 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,285 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-01-14 19:40:44,327 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 17 treesize of output 13 [2019-01-14 19:40:44,332 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 13 treesize of output 5 [2019-01-14 19:40:44,333 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,335 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,344 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:44,344 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2019-01-14 19:40:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:44,354 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:44,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:44,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-01-14 19:40:44,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 19:40:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 19:40:44,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-14 19:40:44,360 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2019-01-14 19:40:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:45,042 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2019-01-14 19:40:45,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 19:40:45,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-01-14 19:40:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:45,048 INFO L225 Difference]: With dead ends: 108 [2019-01-14 19:40:45,048 INFO L226 Difference]: Without dead ends: 108 [2019-01-14 19:40:45,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 19:40:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-01-14 19:40:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2019-01-14 19:40:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-01-14 19:40:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2019-01-14 19:40:45,059 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2019-01-14 19:40:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:45,059 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2019-01-14 19:40:45,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 19:40:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2019-01-14 19:40:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 19:40:45,061 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:45,061 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:45,061 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:45,062 INFO L82 PathProgramCache]: Analyzing trace with hash -20971988, now seen corresponding path program 1 times [2019-01-14 19:40:45,063 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:45,063 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 [2019-01-14 19:40:45,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:45,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:45,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2019-01-14 19:40:45,208 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,253 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-01-14 19:40:45,308 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 [2019-01-14 19:40:45,326 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 [2019-01-14 19:40:45,326 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,330 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,345 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,346 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2019-01-14 19:40:45,377 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 21 treesize of output 17 [2019-01-14 19:40:45,383 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 17 treesize of output 5 [2019-01-14 19:40:45,383 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:45,395 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-01-14 19:40:45,396 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2019-01-14 19:40:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:45,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:45,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:45,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:45,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:45,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:45,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:45,455 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2019-01-14 19:40:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:46,072 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2019-01-14 19:40:46,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 19:40:46,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-01-14 19:40:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:46,075 INFO L225 Difference]: With dead ends: 85 [2019-01-14 19:40:46,075 INFO L226 Difference]: Without dead ends: 85 [2019-01-14 19:40:46,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-14 19:40:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-01-14 19:40:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2019-01-14 19:40:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-01-14 19:40:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2019-01-14 19:40:46,085 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 17 [2019-01-14 19:40:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:46,085 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2019-01-14 19:40:46,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2019-01-14 19:40:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 19:40:46,086 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:46,086 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:46,088 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash -20971987, now seen corresponding path program 1 times [2019-01-14 19:40:46,089 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:46,089 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 [2019-01-14 19:40:46,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:46,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:46,191 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 [2019-01-14 19:40:46,192 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,201 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,201 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-14 19:40:46,231 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 [2019-01-14 19:40:46,238 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 [2019-01-14 19:40:46,239 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,243 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,267 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 [2019-01-14 19:40:46,273 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 [2019-01-14 19:40:46,273 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,277 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,291 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,291 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-01-14 19:40:46,327 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 19 treesize of output 15 [2019-01-14 19:40:46,331 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 15 treesize of output 3 [2019-01-14 19:40:46,332 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,338 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,355 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 23 treesize of output 19 [2019-01-14 19:40:46,379 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 19 treesize of output 7 [2019-01-14 19:40:46,379 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,394 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,402 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:46,402 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-01-14 19:40:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:46,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:46,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:46,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:46,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:46,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:46,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:46,456 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 6 states. [2019-01-14 19:40:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:47,462 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2019-01-14 19:40:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 19:40:47,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-01-14 19:40:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:47,464 INFO L225 Difference]: With dead ends: 101 [2019-01-14 19:40:47,464 INFO L226 Difference]: Without dead ends: 101 [2019-01-14 19:40:47,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-01-14 19:40:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-01-14 19:40:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2019-01-14 19:40:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-01-14 19:40:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2019-01-14 19:40:47,472 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 17 [2019-01-14 19:40:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:47,473 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2019-01-14 19:40:47,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2019-01-14 19:40:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 19:40:47,474 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:47,474 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:47,475 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1522226179, now seen corresponding path program 1 times [2019-01-14 19:40:47,476 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:47,477 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 [2019-01-14 19:40:47,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:47,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:47,588 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2019-01-14 19:40:47,589 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,595 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,596 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-01-14 19:40:47,624 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 [2019-01-14 19:40:47,629 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 [2019-01-14 19:40:47,630 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,652 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2019-01-14 19:40:47,684 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 21 treesize of output 17 [2019-01-14 19:40:47,694 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 17 treesize of output 5 [2019-01-14 19:40:47,695 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,698 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:47,710 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-01-14 19:40:47,710 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2019-01-14 19:40:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:47,733 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:47,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:47,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:47,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:47,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:47,744 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 6 states. [2019-01-14 19:40:48,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:48,159 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2019-01-14 19:40:48,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 19:40:48,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-14 19:40:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:48,162 INFO L225 Difference]: With dead ends: 71 [2019-01-14 19:40:48,162 INFO L226 Difference]: Without dead ends: 71 [2019-01-14 19:40:48,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-14 19:40:48,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-01-14 19:40:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2019-01-14 19:40:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-01-14 19:40:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2019-01-14 19:40:48,169 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 18 [2019-01-14 19:40:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:48,170 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2019-01-14 19:40:48,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2019-01-14 19:40:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 19:40:48,172 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:48,172 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:48,172 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:48,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1522226178, now seen corresponding path program 1 times [2019-01-14 19:40:48,173 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:48,173 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 [2019-01-14 19:40:48,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:48,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:48,272 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 [2019-01-14 19:40:48,272 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,311 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,311 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-14 19:40:48,336 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 [2019-01-14 19:40:48,341 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 [2019-01-14 19:40:48,342 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,349 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,382 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 [2019-01-14 19:40:48,387 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 [2019-01-14 19:40:48,388 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,393 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,412 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-01-14 19:40:48,437 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 19 treesize of output 15 [2019-01-14 19:40:48,442 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 15 treesize of output 3 [2019-01-14 19:40:48,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,447 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,463 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 23 treesize of output 19 [2019-01-14 19:40:48,469 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 19 treesize of output 7 [2019-01-14 19:40:48,469 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,473 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:48,480 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-01-14 19:40:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:48,510 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:48,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:48,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 19:40:48,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 19:40:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 19:40:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:40:48,514 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2019-01-14 19:40:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:49,145 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2019-01-14 19:40:49,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 19:40:49,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-14 19:40:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:49,148 INFO L225 Difference]: With dead ends: 88 [2019-01-14 19:40:49,148 INFO L226 Difference]: Without dead ends: 88 [2019-01-14 19:40:49,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-01-14 19:40:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-01-14 19:40:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2019-01-14 19:40:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-01-14 19:40:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2019-01-14 19:40:49,153 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 18 [2019-01-14 19:40:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:49,153 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2019-01-14 19:40:49,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 19:40:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2019-01-14 19:40:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 19:40:49,156 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:49,156 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:49,156 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:49,158 INFO L82 PathProgramCache]: Analyzing trace with hash 351439361, now seen corresponding path program 1 times [2019-01-14 19:40:49,158 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:49,159 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 [2019-01-14 19:40:49,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:49,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:49,268 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 11 treesize of output 8 [2019-01-14 19:40:49,273 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 8 treesize of output 7 [2019-01-14 19:40:49,273 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,276 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,283 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-01-14 19:40:49,317 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 17 treesize of output 13 [2019-01-14 19:40:49,323 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 13 treesize of output 5 [2019-01-14 19:40:49,324 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,326 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,327 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:49,327 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2019-01-14 19:40:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:49,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:49,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:49,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-01-14 19:40:49,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 19:40:49,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 19:40:49,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-14 19:40:49,345 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2019-01-14 19:40:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:49,801 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2019-01-14 19:40:49,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 19:40:49,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-01-14 19:40:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:49,803 INFO L225 Difference]: With dead ends: 83 [2019-01-14 19:40:49,804 INFO L226 Difference]: Without dead ends: 83 [2019-01-14 19:40:49,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 19:40:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-01-14 19:40:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2019-01-14 19:40:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-01-14 19:40:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2019-01-14 19:40:49,810 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 19 [2019-01-14 19:40:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:49,810 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-01-14 19:40:49,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 19:40:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2019-01-14 19:40:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 19:40:49,816 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:49,816 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:49,816 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION]=== [2019-01-14 19:40:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1991906798, now seen corresponding path program 1 times [2019-01-14 19:40:49,817 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:49,817 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 [2019-01-14 19:40:49,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:49,969 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 19:40:49,983 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 19:40:49,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 07:40:49 BoogieIcfgContainer [2019-01-14 19:40:50,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 19:40:50,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 19:40:50,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 19:40:50,001 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 19:40:50,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:41" (3/4) ... [2019-01-14 19:40:50,007 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 19:40:50,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 19:40:50,009 INFO L168 Benchmark]: Toolchain (without parser) took 9988.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -91.4 MB). Peak memory consumption was 116.2 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:50,011 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. [2019-01-14 19:40:50,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:50,012 INFO L168 Benchmark]: Boogie Preprocessor took 80.38 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:50,013 INFO L168 Benchmark]: RCFGBuilder took 1083.63 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:50,015 INFO L168 Benchmark]: TraceAbstraction took 8130.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:50,016 INFO L168 Benchmark]: Witness Printer took 7.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:50,021 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 681.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.38 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1083.63 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8130.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. * Witness Printer took 7.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. 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 a = (List) malloc(sizeof(struct node)); VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}] [L628] COND FALSE !(a == 0) VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}] [L629] List t; [L630] List p = a; VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L646] p = a VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L647] EXPR p->h VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR p->h VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={1073741824:0}, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 74 locations, 25 error locations. UNSAFE Result, 8.0s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 5.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 310 SDtfs, 690 SDslu, 606 SDs, 0 SdLazy, 974 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, 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, 134 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 8828 SizeOfPredicates, 50 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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...