./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0aa8863ece82a1c5b6b3bdfef0291d9b5e9dd95e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:32:07,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:32:07,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:32:07,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:32:07,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:32:07,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:32:07,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:32:07,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:32:07,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:32:07,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:32:07,193 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:32:07,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:32:07,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:32:07,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:32:07,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:32:07,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:32:07,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:32:07,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:32:07,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:32:07,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:32:07,200 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:32:07,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:32:07,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:32:07,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:32:07,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:32:07,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:32:07,204 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:32:07,205 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:32:07,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:32:07,206 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:32:07,206 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:32:07,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:32:07,207 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:32:07,207 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:32:07,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:32:07,208 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:32:07,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 13:32:07,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:32:07,218 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:32:07,219 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:32:07,219 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:32:07,220 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:32:07,220 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:32:07,220 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:32:07,220 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:32:07,220 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:32:07,220 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:32:07,221 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:32:07,222 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:32:07,222 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:32:07,222 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:32:07,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:32:07,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:32:07,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:32:07,223 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:32:07,223 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:32:07,223 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:32:07,223 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:32:07,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0aa8863ece82a1c5b6b3bdfef0291d9b5e9dd95e [2018-11-28 13:32:07,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:32:07,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:32:07,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:32:07,261 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:32:07,261 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:32:07,262 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i [2018-11-28 13:32:07,301 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/data/e1da528c3/f5d80b48a99f4128a460a6812e54913c/FLAGe9787ab59 [2018-11-28 13:32:07,745 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:32:07,745 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i [2018-11-28 13:32:07,754 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/data/e1da528c3/f5d80b48a99f4128a460a6812e54913c/FLAGe9787ab59 [2018-11-28 13:32:07,764 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/data/e1da528c3/f5d80b48a99f4128a460a6812e54913c [2018-11-28 13:32:07,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:32:07,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 13:32:07,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:32:07,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:32:07,771 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:32:07,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:32:07" (1/1) ... [2018-11-28 13:32:07,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b1a59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:07, skipping insertion in model container [2018-11-28 13:32:07,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:32:07" (1/1) ... [2018-11-28 13:32:07,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:32:07,808 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:32:08,009 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:32:08,069 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:32:08,103 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:32:08,138 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:32:08,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08 WrapperNode [2018-11-28 13:32:08,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:32:08,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:32:08,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:32:08,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:32:08,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... [2018-11-28 13:32:08,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:32:08,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:32:08,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:32:08,181 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:32:08,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:32:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:32:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:32:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-28 13:32:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 13:32:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 13:32:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 13:32:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 13:32:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 13:32:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 13:32:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 13:32:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 13:32:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 13:32:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 13:32:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 13:32:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 13:32:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 13:32:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 13:32:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 13:32:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 13:32:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 13:32:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 13:32:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 13:32:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 13:32:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 13:32:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 13:32:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 13:32:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 13:32:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 13:32:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 13:32:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:32:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:32:08,600 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:32:08,600 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 13:32:08,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:32:08 BoogieIcfgContainer [2018-11-28 13:32:08,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:32:08,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:32:08,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:32:08,604 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:32:08,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:32:07" (1/3) ... [2018-11-28 13:32:08,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6829d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:32:08, skipping insertion in model container [2018-11-28 13:32:08,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:32:08" (2/3) ... [2018-11-28 13:32:08,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6829d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:32:08, skipping insertion in model container [2018-11-28 13:32:08,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:32:08" (3/3) ... [2018-11-28 13:32:08,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 960521-1_1_false-valid-free.i [2018-11-28 13:32:08,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:32:08,624 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-11-28 13:32:08,639 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2018-11-28 13:32:08,662 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:32:08,663 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:32:08,663 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 13:32:08,663 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:32:08,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:32:08,663 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:32:08,663 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:32:08,664 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:32:08,664 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:32:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-28 13:32:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:32:08,687 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:08,688 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:08,689 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:08,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -375831319, now seen corresponding path program 1 times [2018-11-28 13:32:08,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:08,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:08,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:08,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:08,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:08,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:08,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:32:08,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:32:08,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:32:08,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:32:08,832 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-28 13:32:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:08,848 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-11-28 13:32:08,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:32:08,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-28 13:32:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:08,858 INFO L225 Difference]: With dead ends: 54 [2018-11-28 13:32:08,859 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 13:32:08,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:32:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 13:32:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-28 13:32:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 13:32:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-11-28 13:32:08,893 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 9 [2018-11-28 13:32:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:08,894 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2018-11-28 13:32:08,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:32:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2018-11-28 13:32:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:32:08,894 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:08,894 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:08,895 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:08,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1233916652, now seen corresponding path program 1 times [2018-11-28 13:32:08,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:08,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:08,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:08,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:08,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:08,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:08,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:32:08,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:32:08,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:32:08,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:32:08,966 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 3 states. [2018-11-28 13:32:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:09,023 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-11-28 13:32:09,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:32:09,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 13:32:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:09,024 INFO L225 Difference]: With dead ends: 50 [2018-11-28 13:32:09,024 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 13:32:09,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:32:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 13:32:09,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-28 13:32:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 13:32:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-28 13:32:09,029 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 10 [2018-11-28 13:32:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:09,030 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-28 13:32:09,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:32:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-11-28 13:32:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:32:09,030 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:09,031 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:09,031 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:09,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1233916653, now seen corresponding path program 1 times [2018-11-28 13:32:09,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:09,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:09,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:09,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:09,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:32:09,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:32:09,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:32:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:32:09,093 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-11-28 13:32:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:09,128 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-11-28 13:32:09,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:32:09,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 13:32:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:09,130 INFO L225 Difference]: With dead ends: 49 [2018-11-28 13:32:09,130 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 13:32:09,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:32:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 13:32:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-28 13:32:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 13:32:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-11-28 13:32:09,135 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 10 [2018-11-28 13:32:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:09,135 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-11-28 13:32:09,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:32:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-11-28 13:32:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 13:32:09,136 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:09,136 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:09,136 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:09,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash 393519525, now seen corresponding path program 1 times [2018-11-28 13:32:09,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:09,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:09,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:32:09,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:32:09,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:32:09,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:32:09,196 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 4 states. [2018-11-28 13:32:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:09,221 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-28 13:32:09,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:32:09,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-28 13:32:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:09,222 INFO L225 Difference]: With dead ends: 46 [2018-11-28 13:32:09,222 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 13:32:09,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:32:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 13:32:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-28 13:32:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 13:32:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-28 13:32:09,225 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 15 [2018-11-28 13:32:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:09,225 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-28 13:32:09,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:32:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-28 13:32:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 13:32:09,225 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:09,225 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:09,226 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:09,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:09,226 INFO L82 PathProgramCache]: Analyzing trace with hash 393519526, now seen corresponding path program 1 times [2018-11-28 13:32:09,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:09,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:09,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:09,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:09,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:32:09,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:32:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:32:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:32:09,340 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 6 states. [2018-11-28 13:32:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:09,460 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-11-28 13:32:09,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:32:09,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-28 13:32:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:09,465 INFO L225 Difference]: With dead ends: 54 [2018-11-28 13:32:09,465 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 13:32:09,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:32:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 13:32:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2018-11-28 13:32:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 13:32:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-28 13:32:09,471 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 15 [2018-11-28 13:32:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:09,471 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-28 13:32:09,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:32:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-28 13:32:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 13:32:09,473 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:09,473 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:09,474 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:09,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1920516194, now seen corresponding path program 1 times [2018-11-28 13:32:09,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:09,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:09,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:09,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:32:09,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:32:09,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:32:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:09,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:32:09,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2018-11-28 13:32:09,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:32:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:32:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:32:09,642 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 8 states. [2018-11-28 13:32:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:09,734 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2018-11-28 13:32:09,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:32:09,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-28 13:32:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:09,735 INFO L225 Difference]: With dead ends: 80 [2018-11-28 13:32:09,735 INFO L226 Difference]: Without dead ends: 80 [2018-11-28 13:32:09,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:32:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-28 13:32:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 61. [2018-11-28 13:32:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 13:32:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-11-28 13:32:09,739 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 18 [2018-11-28 13:32:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:09,739 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-11-28 13:32:09,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:32:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-11-28 13:32:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 13:32:09,740 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:09,740 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:09,741 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:09,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash -720258237, now seen corresponding path program 1 times [2018-11-28 13:32:09,741 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:09,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:09,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:32:09,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:32:09,828 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:32:09,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:09,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:32:09,939 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-28 13:32:09,941 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 13:32:09,961 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-11-28 13:32:09,971 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-11-28 13:32:09,972 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 13:32:09,982 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 13:32:09,990 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-28 13:32:09,991 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:28, output treesize:25 [2018-11-28 13:32:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:32:10,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:32:10,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2018-11-28 13:32:10,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:32:10,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:32:10,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:32:10,067 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2018-11-28 13:32:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:10,417 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2018-11-28 13:32:10,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:32:10,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-11-28 13:32:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:10,418 INFO L225 Difference]: With dead ends: 95 [2018-11-28 13:32:10,418 INFO L226 Difference]: Without dead ends: 95 [2018-11-28 13:32:10,419 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:32:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-28 13:32:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2018-11-28 13:32:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-28 13:32:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2018-11-28 13:32:10,424 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 20 [2018-11-28 13:32:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:10,425 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2018-11-28 13:32:10,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:32:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2018-11-28 13:32:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:32:10,426 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:10,426 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] [2018-11-28 13:32:10,426 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:10,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash -275803729, now seen corresponding path program 1 times [2018-11-28 13:32:10,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:10,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:10,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:10,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:32:10,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:10,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:32:10,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:32:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:32:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:32:10,469 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2018-11-28 13:32:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:10,496 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-11-28 13:32:10,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:32:10,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 13:32:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:10,498 INFO L225 Difference]: With dead ends: 61 [2018-11-28 13:32:10,498 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 13:32:10,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:32:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 13:32:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-28 13:32:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 13:32:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-11-28 13:32:10,503 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 22 [2018-11-28 13:32:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:10,503 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-11-28 13:32:10,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:32:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-11-28 13:32:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:32:10,504 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:10,504 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] [2018-11-28 13:32:10,505 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:10,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -275803728, now seen corresponding path program 1 times [2018-11-28 13:32:10,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:10,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:10,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:10,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:32:10,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:10,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:32:10,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:32:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:32:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:32:10,581 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 6 states. [2018-11-28 13:32:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:10,610 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-11-28 13:32:10,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:32:10,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-11-28 13:32:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:10,611 INFO L225 Difference]: With dead ends: 53 [2018-11-28 13:32:10,611 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 13:32:10,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:32:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 13:32:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-28 13:32:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 13:32:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-11-28 13:32:10,615 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 22 [2018-11-28 13:32:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:10,616 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-11-28 13:32:10,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:32:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-11-28 13:32:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 13:32:10,617 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:10,617 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:10,617 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:10,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:10,617 INFO L82 PathProgramCache]: Analyzing trace with hash 977823692, now seen corresponding path program 1 times [2018-11-28 13:32:10,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:10,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:10,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:10,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 13:32:10,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:32:10,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 13:32:10,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:32:10,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:32:10,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:32:10,730 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 8 states. [2018-11-28 13:32:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:10,812 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-11-28 13:32:10,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:32:10,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 13:32:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:10,814 INFO L225 Difference]: With dead ends: 65 [2018-11-28 13:32:10,814 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 13:32:10,814 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:32:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 13:32:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2018-11-28 13:32:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 13:32:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-11-28 13:32:10,817 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 25 [2018-11-28 13:32:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:10,817 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-11-28 13:32:10,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:32:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-11-28 13:32:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:32:10,821 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:10,821 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:10,821 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 13:32:10,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1794870287, now seen corresponding path program 1 times [2018-11-28 13:32:10,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:32:10,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:32:10,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:32:10,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:32:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:32:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:32:10,856 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:32:10,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:32:10 BoogieIcfgContainer [2018-11-28 13:32:10,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:32:10,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:32:10,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:32:10,883 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:32:10,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:32:08" (3/4) ... [2018-11-28 13:32:10,888 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 13:32:10,931 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d1b75505-43ce-4082-9c69-7332b1bee4d0/bin-2019/uautomizer/witness.graphml [2018-11-28 13:32:10,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:32:10,932 INFO L168 Benchmark]: Toolchain (without parser) took 3165.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 998.7 MB in the end (delta: -47.0 MB). Peak memory consumption was 57.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:32:10,934 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:32:10,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -142.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:32:10,935 INFO L168 Benchmark]: Boogie Preprocessor took 40.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:32:10,935 INFO L168 Benchmark]: RCFGBuilder took 420.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:32:10,936 INFO L168 Benchmark]: TraceAbstraction took 2280.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.7 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:32:10,937 INFO L168 Benchmark]: Witness Printer took 48.40 ms. Allocated memory is still 1.1 GB. Free memory is still 998.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:32:10,939 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -142.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 420.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2280.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.7 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. * Witness Printer took 48.40 ms. Allocated memory is still 1.1 GB. Free memory is still 998.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 643]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L619] int *a, *b; [L620] int n; VAL [\old(a)=8, \old(a)=11, \old(b)=12, \old(b)=5, \old(n)=10, a={0:0}, b={0:0}, n=0] [L632] n = 1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=1] [L633] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L636] a = malloc(n * sizeof(*a)) [L637] b = malloc(n * sizeof(*b)) [L638] EXPR b++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, b++={9:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] [L638] *b++ = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, b++={9:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] [L639] CALL foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, n=1] [L624] int i; [L625] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=0, n=1] [L625] COND TRUE i < n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=0, n=1] [L626] a[i] = -1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=0, n=1] [L625] i++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=1, n=1] [L625] COND FALSE !(i < n) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=1, n=1] [L627] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=0, n=1] [L627] COND FALSE !(i < n - 1) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, i=0, n=1] [L639] RET foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] [L640] b[-1] VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, b[-1]=0, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] [L640] COND FALSE !(b[-1]) [L643] free(a) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] [L643] free(a) [L643] free(b) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={9:4}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={9:0}, n=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 17 error locations. UNSAFE Result, 2.2s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 400 SDtfs, 609 SDslu, 574 SDs, 0 SdLazy, 618 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 192 ConstructedInterpolants, 9 QuantifiedInterpolants, 21626 SizeOfPredicates, 7 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 17/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...