./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:20:11,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:20:11,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:20:11,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:20:11,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:20:11,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:20:11,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:20:11,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:20:11,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:20:11,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:20:11,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:20:11,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:20:11,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:20:11,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:20:11,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:20:11,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:20:11,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:20:11,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:20:11,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:20:11,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:20:11,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:20:11,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:20:11,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:20:11,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:20:11,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:20:11,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:20:11,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:20:11,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:20:11,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:20:11,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:20:11,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:20:11,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:20:11,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:20:11,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:20:11,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:20:11,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:20:11,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:20:11,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:20:11,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:20:11,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:20:11,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:20:11,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:20:11,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:20:11,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:20:11,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:20:11,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:20:11,179 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:20:11,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:20:11,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:20:11,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:20:11,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:20:11,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:20:11,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:20:11,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:20:11,181 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:20:11,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:20:11,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:20:11,181 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:20:11,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:20:11,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:20:11,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:20:11,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:20:11,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:20:11,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:20:11,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:20:11,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:20:11,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:20:11,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:20:11,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/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 -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2019-11-15 21:20:11,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:20:11,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:20:11,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:20:11,263 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:20:11,263 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:20:11,264 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-15 21:20:11,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/data/42cf990ea/0a7557265b7a41958f463e775d9b2c9c/FLAGaf5afe6dc [2019-11-15 21:20:11,863 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:20:11,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-15 21:20:11,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/data/42cf990ea/0a7557265b7a41958f463e775d9b2c9c/FLAGaf5afe6dc [2019-11-15 21:20:12,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/data/42cf990ea/0a7557265b7a41958f463e775d9b2c9c [2019-11-15 21:20:12,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:20:12,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:20:12,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:12,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:20:12,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:20:12,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f23af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12, skipping insertion in model container [2019-11-15 21:20:12,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,205 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:20:12,244 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:20:12,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:12,758 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:20:12,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:12,867 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:20:12,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12 WrapperNode [2019-11-15 21:20:12,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:12,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:20:12,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:20:12,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:20:12,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... [2019-11-15 21:20:12,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:20:12,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:20:12,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:20:12,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:20:12,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/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 [2019-11-15 21:20:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:20:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:20:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:20:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:20:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 21:20:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 21:20:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 21:20:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-11-15 21:20:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:20:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:20:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:20:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:20:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:20:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:20:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:20:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:20:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:20:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:20:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:20:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:20:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:20:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:20:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:20:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:20:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:20:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:20:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:20:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 21:20:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 21:20:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 21:20:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:20:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:20:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:20:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:20:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:20:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:20:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:20:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:20:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:20:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:20:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:20:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:20:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:20:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:20:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:20:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:20:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:20:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:20:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:20:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:20:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:20:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:20:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:20:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:20:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:20:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:20:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:20:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:20:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:20:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:20:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:20:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 21:20:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-15 21:20:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-11-15 21:20:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:20:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:20:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:20:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:20:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:20:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:20:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:20:13,559 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:20:13,559 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:20:13,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:13 BoogieIcfgContainer [2019-11-15 21:20:13,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:20:13,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:20:13,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:20:13,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:20:13,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:20:12" (1/3) ... [2019-11-15 21:20:13,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550ab8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:13, skipping insertion in model container [2019-11-15 21:20:13,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:12" (2/3) ... [2019-11-15 21:20:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550ab8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:13, skipping insertion in model container [2019-11-15 21:20:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:13" (3/3) ... [2019-11-15 21:20:13,570 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2019-11-15 21:20:13,585 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:20:13,596 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-15 21:20:13,610 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-15 21:20:13,634 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:20:13,634 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:20:13,634 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:20:13,634 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:20:13,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:20:13,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:20:13,645 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:20:13,645 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:20:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 21:20:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:20:13,678 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:13,679 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:13,681 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-11-15 21:20:13,697 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:13,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184867227] [2019-11-15 21:20:13,698 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:13,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:13,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:14,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184867227] [2019-11-15 21:20:14,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:14,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:20:14,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573563256] [2019-11-15 21:20:14,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:20:14,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:20:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:20:14,027 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-11-15 21:20:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:14,183 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-15 21:20:14,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:20:14,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 21:20:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:14,196 INFO L225 Difference]: With dead ends: 33 [2019-11-15 21:20:14,197 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 21:20:14,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:20:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 21:20:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 21:20:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:20:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-15 21:20:14,240 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-11-15 21:20:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:14,241 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-15 21:20:14,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:20:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-15 21:20:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:20:14,242 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:14,242 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:14,242 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-11-15 21:20:14,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:14,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753651141] [2019-11-15 21:20:14,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:14,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:14,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:14,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753651141] [2019-11-15 21:20:14,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:14,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:20:14,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248798752] [2019-11-15 21:20:14,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:20:14,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:14,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:20:14,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:20:14,393 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-11-15 21:20:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:14,608 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-15 21:20:14,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:20:14,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 21:20:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:14,610 INFO L225 Difference]: With dead ends: 34 [2019-11-15 21:20:14,610 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 21:20:14,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:20:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 21:20:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-15 21:20:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 21:20:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-15 21:20:14,619 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2019-11-15 21:20:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:14,621 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-15 21:20:14,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:20:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-15 21:20:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 21:20:14,622 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:14,622 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:14,623 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-11-15 21:20:14,624 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:14,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109288687] [2019-11-15 21:20:14,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:14,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:14,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:14,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109288687] [2019-11-15 21:20:14,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233436813] [2019-11-15 21:20:14,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:14,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 21:20:14,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:15,029 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:20:15,029 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:15,039 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:15,040 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:15,040 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:20:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:15,062 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:15,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-15 21:20:15,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228214986] [2019-11-15 21:20:15,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:20:15,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:15,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:20:15,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:20:15,065 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-11-15 21:20:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:15,236 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-15 21:20:15,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:20:15,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-15 21:20:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:15,238 INFO L225 Difference]: With dead ends: 33 [2019-11-15 21:20:15,238 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 21:20:15,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:20:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 21:20:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-11-15 21:20:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:20:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-15 21:20:15,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2019-11-15 21:20:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:15,245 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-15 21:20:15,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:20:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-15 21:20:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:20:15,246 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:15,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:15,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:15,448 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2019-11-15 21:20:15,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:15,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888550026] [2019-11-15 21:20:15,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:15,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:15,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:15,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888550026] [2019-11-15 21:20:15,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:15,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:20:15,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187943753] [2019-11-15 21:20:15,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:20:15,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:20:15,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:20:15,636 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-15 21:20:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:15,951 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-11-15 21:20:15,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:20:15,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-15 21:20:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:15,955 INFO L225 Difference]: With dead ends: 32 [2019-11-15 21:20:15,955 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 21:20:15,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:20:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 21:20:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-15 21:20:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 21:20:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-15 21:20:15,963 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-11-15 21:20:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:15,964 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-15 21:20:15,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:20:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-15 21:20:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:20:15,966 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:15,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:15,966 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2019-11-15 21:20:15,967 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:15,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233326713] [2019-11-15 21:20:15,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:15,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:15,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:16,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233326713] [2019-11-15 21:20:16,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735142200] [2019-11-15 21:20:16,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:16,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-15 21:20:16,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:16,480 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:20:16,481 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:16,490 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:16,490 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:16,491 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-15 21:20:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:16,794 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:16,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2019-11-15 21:20:16,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687025966] [2019-11-15 21:20:16,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 21:20:16,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 21:20:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-11-15 21:20:16,796 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 19 states. [2019-11-15 21:20:17,512 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-11-15 21:20:17,713 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-15 21:20:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:18,409 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2019-11-15 21:20:18,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-15 21:20:18,411 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-11-15 21:20:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:18,413 INFO L225 Difference]: With dead ends: 72 [2019-11-15 21:20:18,413 INFO L226 Difference]: Without dead ends: 72 [2019-11-15 21:20:18,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332 [2019-11-15 21:20:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-15 21:20:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 31. [2019-11-15 21:20:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:20:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-15 21:20:18,421 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2019-11-15 21:20:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:18,421 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-15 21:20:18,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 21:20:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-15 21:20:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:20:18,422 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:18,423 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:18,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:18,623 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2019-11-15 21:20:18,624 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:18,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30098123] [2019-11-15 21:20:18,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:18,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30098123] [2019-11-15 21:20:18,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964554977] [2019-11-15 21:20:18,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:18,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 21:20:18,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:18,949 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:20:18,950 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:18,963 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:18,963 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:18,963 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:20:18,987 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-15 21:20:18,988 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:18,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:18,993 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:18,993 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-11-15 21:20:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:19,026 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:19,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-15 21:20:19,026 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541904374] [2019-11-15 21:20:19,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 21:20:19,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:19,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 21:20:19,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:20:19,028 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2019-11-15 21:20:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:19,433 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2019-11-15 21:20:19,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 21:20:19,433 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-11-15 21:20:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:19,435 INFO L225 Difference]: With dead ends: 68 [2019-11-15 21:20:19,435 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 21:20:19,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-11-15 21:20:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 21:20:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-11-15 21:20:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 21:20:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-11-15 21:20:19,448 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2019-11-15 21:20:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:19,448 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-11-15 21:20:19,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 21:20:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-11-15 21:20:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:20:19,450 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:19,450 INFO L380 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] [2019-11-15 21:20:19,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:19,657 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:19,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2019-11-15 21:20:19,658 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:19,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091600926] [2019-11-15 21:20:19,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:19,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:19,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:20:19,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091600926] [2019-11-15 21:20:19,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:19,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:20:19,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858064028] [2019-11-15 21:20:19,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:20:19,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:20:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:20:19,780 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-11-15 21:20:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:19,849 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-11-15 21:20:19,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:20:19,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-15 21:20:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:19,850 INFO L225 Difference]: With dead ends: 51 [2019-11-15 21:20:19,851 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 21:20:19,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:20:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 21:20:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 21:20:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 21:20:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-15 21:20:19,854 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2019-11-15 21:20:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:19,855 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-15 21:20:19,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:20:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-15 21:20:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-15 21:20:19,856 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:19,856 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:19,856 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2019-11-15 21:20:19,857 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:19,857 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434264247] [2019-11-15 21:20:19,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:19,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:19,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:20,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434264247] [2019-11-15 21:20:20,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966366765] [2019-11-15 21:20:20,367 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:20,530 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:20:20,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:20:20,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-15 21:20:20,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:20,596 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:20:20,597 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:20,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:20,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:20,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-15 21:20:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:21,079 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:21,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2019-11-15 21:20:21,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490813178] [2019-11-15 21:20:21,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-15 21:20:21,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:21,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-15 21:20:21,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2019-11-15 21:20:21,081 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-11-15 21:20:21,905 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-15 21:20:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:22,785 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-11-15 21:20:22,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 21:20:22,786 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-11-15 21:20:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:22,787 INFO L225 Difference]: With dead ends: 59 [2019-11-15 21:20:22,787 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 21:20:22,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=263, Invalid=1807, Unknown=0, NotChecked=0, Total=2070 [2019-11-15 21:20:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 21:20:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-11-15 21:20:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 21:20:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-15 21:20:22,793 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2019-11-15 21:20:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:22,793 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-15 21:20:22,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-15 21:20:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-15 21:20:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 21:20:22,794 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:22,795 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:22,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:22,995 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2019-11-15 21:20:22,996 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:22,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706767358] [2019-11-15 21:20:22,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:22,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:22,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:23,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706767358] [2019-11-15 21:20:23,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256829559] [2019-11-15 21:20:23,235 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:23,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 21:20:23,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:20:23,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 21:20:23,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:23,416 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:20:23,416 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:23,431 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:23,431 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:23,432 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:20:23,496 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-15 21:20:23,496 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:20:23,500 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:20:23,501 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:20:23,501 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-11-15 21:20:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:23,610 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:23,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2019-11-15 21:20:23,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341639119] [2019-11-15 21:20:23,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 21:20:23,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 21:20:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2019-11-15 21:20:23,612 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 18 states. [2019-11-15 21:20:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:24,163 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-11-15 21:20:24,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:20:24,164 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2019-11-15 21:20:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:24,164 INFO L225 Difference]: With dead ends: 54 [2019-11-15 21:20:24,165 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 21:20:24,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2019-11-15 21:20:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 21:20:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-11-15 21:20:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-15 21:20:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-15 21:20:24,170 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2019-11-15 21:20:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:24,170 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-15 21:20:24,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 21:20:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-15 21:20:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 21:20:24,171 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:24,172 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:24,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:24,376 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:20:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:24,377 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2019-11-15 21:20:24,377 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:24,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812901818] [2019-11-15 21:20:24,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:24,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:24,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:25,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812901818] [2019-11-15 21:20:25,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255255123] [2019-11-15 21:20:25,016 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:25,153 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:20:25,153 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:20:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-15 21:20:25,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:29,974 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-15 21:20:34,097 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2019-11-15 21:20:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-15 21:20:34,103 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:20:34,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2019-11-15 21:20:34,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286448609] [2019-11-15 21:20:34,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-15 21:20:34,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:34,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-15 21:20:34,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=852, Unknown=2, NotChecked=0, Total=930 [2019-11-15 21:20:34,105 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 31 states. [2019-11-15 21:20:34,774 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-15 21:20:35,013 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-11-15 21:20:35,247 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-11-15 21:20:45,041 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-11-15 21:20:47,568 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-11-15 21:20:54,234 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2019-11-15 21:20:54,599 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-11-15 21:20:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:54,755 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-15 21:20:54,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-15 21:20:54,755 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2019-11-15 21:20:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:54,755 INFO L225 Difference]: With dead ends: 63 [2019-11-15 21:20:54,755 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:20:54,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=447, Invalid=3209, Unknown=4, NotChecked=0, Total=3660 [2019-11-15 21:20:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:20:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:20:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:20:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:20:54,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-15 21:20:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:54,758 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:20:54,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-15 21:20:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:20:54,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:20:54,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:20:54,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:20:54 BoogieIcfgContainer [2019-11-15 21:20:54,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:20:54,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:20:54,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:20:54,964 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:20:54,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:13" (3/4) ... [2019-11-15 21:20:54,967 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:20:54,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 21:20:54,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-11-15 21:20:54,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-15 21:20:54,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-15 21:20:54,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-15 21:20:54,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-15 21:20:54,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 21:20:54,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-15 21:20:54,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-15 21:20:54,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-15 21:20:54,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 21:20:55,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce99cccc-6f19-4190-a31a-2b5b57cdfcdf/bin/uautomizer/witness.graphml [2019-11-15 21:20:55,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:20:55,034 INFO L168 Benchmark]: Toolchain (without parser) took 42857.65 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 323.5 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -274.4 MB). Peak memory consumption was 49.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,034 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:20:55,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,035 INFO L168 Benchmark]: Boogie Preprocessor took 68.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,036 INFO L168 Benchmark]: RCFGBuilder took 622.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,036 INFO L168 Benchmark]: TraceAbstraction took 41401.00 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 200.8 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,037 INFO L168 Benchmark]: Witness Printer took 68.80 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:55,039 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 691.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 622.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 41401.00 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 200.8 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Witness Printer took 68.80 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 41.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 639 SDslu, 587 SDs, 0 SdLazy, 2345 SolverSat, 210 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 14.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 22.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 93 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 361 ConstructedInterpolants, 2 QuantifiedInterpolants, 84768 SizeOfPredicates, 48 NumberOfNonLiveVariables, 783 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 26/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...