./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.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_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i -s /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/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 e0d1331ff6e93d99c9a0972b6d5580bf2c78fcc5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:07:19,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:07:19,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:07:19,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:07:19,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:07:19,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:07:19,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:07:19,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:07:19,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:07:19,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:07:19,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:07:19,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:07:19,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:07:19,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:07:19,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:07:19,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:07:19,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:07:19,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:07:19,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:07:19,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:07:19,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:07:19,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:07:19,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:07:19,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:07:19,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:07:19,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:07:19,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:07:19,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:07:19,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:07:19,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:07:19,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:07:19,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:07:19,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:07:19,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:07:19,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:07:19,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:07:19,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:07:19,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:07:19,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:07:19,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:07:19,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:07:19,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 22:07:19,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:07:19,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:07:19,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:07:19,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:07:19,581 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:07:19,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:07:19,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:07:19,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:07:19,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:07:19,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:07:19,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:07:19,583 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 22:07:19,583 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 22:07:19,584 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 22:07:19,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:07:19,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:07:19,586 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:07:19,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:07:19,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:07:19,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:07:19,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:07:19,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:07:19,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:07:19,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:07:19,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:07:19,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:07:19,589 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_85a521ae-d5bc-4133-af0c-230a392d1d89/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 -> e0d1331ff6e93d99c9a0972b6d5580bf2c78fcc5 [2019-11-15 22:07:19,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:07:19,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:07:19,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:07:19,656 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:07:19,657 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:07:19,658 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2019-11-15 22:07:19,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/data/3558d8ac1/5b91e3dec9d94554bfe2b603f0353d97/FLAG8286f108e [2019-11-15 22:07:20,167 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:07:20,168 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2019-11-15 22:07:20,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/data/3558d8ac1/5b91e3dec9d94554bfe2b603f0353d97/FLAG8286f108e [2019-11-15 22:07:20,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/data/3558d8ac1/5b91e3dec9d94554bfe2b603f0353d97 [2019-11-15 22:07:20,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:07:20,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 22:07:20,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:07:20,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:07:20,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:07:20,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:20,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756d6f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20, skipping insertion in model container [2019-11-15 22:07:20,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:20,213 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:07:20,258 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:07:20,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:07:20,822 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:07:20,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:07:20,981 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:07:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20 WrapperNode [2019-11-15 22:07:20,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:07:20,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:07:20,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:07:20,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:07:20,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:20,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... [2019-11-15 22:07:21,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:07:21,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:07:21,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:07:21,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:07:21,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/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 22:07:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 22:07:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:07:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 22:07:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 22:07:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 22:07:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 22:07:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 22:07:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-15 22:07:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 22:07:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-15 22:07:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 22:07:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 22:07:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 22:07:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 22:07:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 22:07:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 22:07:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 22:07:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 22:07:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 22:07:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 22:07:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 22:07:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 22:07:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 22:07:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 22:07:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 22:07:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 22:07:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 22:07:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 22:07:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 22:07:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 22:07:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 22:07:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 22:07:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 22:07:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 22:07:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 22:07:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 22:07:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 22:07:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 22:07:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 22:07:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 22:07:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 22:07:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 22:07:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 22:07:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 22:07:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 22:07:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 22:07:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 22:07:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 22:07:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 22:07:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 22:07:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 22:07:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 22:07:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 22:07:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 22:07:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 22:07:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 22:07:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 22:07:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 22:07:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 22:07:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 22:07:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 22:07:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 22:07:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 22:07:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 22:07:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 22:07:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 22:07:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 22:07:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 22:07:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 22:07:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 22:07:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 22:07:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 22:07:21,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 22:07:21,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 22:07:21,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 22:07:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 22:07:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 22:07:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 22:07:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 22:07:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 22:07:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 22:07:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 22:07:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-15 22:07:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 22:07:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 22:07:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:07:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:07:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 22:07:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 22:07:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:07:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 22:07:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:07:21,585 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-15 22:07:21,877 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:07:21,877 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-15 22:07:21,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:07:21 BoogieIcfgContainer [2019-11-15 22:07:21,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:07:21,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:07:21,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:07:21,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:07:21,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:07:20" (1/3) ... [2019-11-15 22:07:21,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb9776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:07:21, skipping insertion in model container [2019-11-15 22:07:21,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:07:20" (2/3) ... [2019-11-15 22:07:21,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb9776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:07:21, skipping insertion in model container [2019-11-15 22:07:21,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:07:21" (3/3) ... [2019-11-15 22:07:21,886 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2019-11-15 22:07:21,896 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:07:21,904 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2019-11-15 22:07:21,916 INFO L249 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2019-11-15 22:07:21,935 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:07:21,936 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 22:07:21,936 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:07:21,936 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:07:21,936 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:07:21,936 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:07:21,936 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:07:21,936 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:07:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2019-11-15 22:07:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:07:21,965 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:21,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:07:21,967 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:21,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2003887455, now seen corresponding path program 1 times [2019-11-15 22:07:21,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:21,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812979062] [2019-11-15 22:07:21,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:21,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:21,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:22,150 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 22:07:22,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812979062] [2019-11-15 22:07:22,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:22,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:07:22,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728363318] [2019-11-15 22:07:22,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:07:22,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:07:22,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:07:22,185 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2019-11-15 22:07:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:22,458 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2019-11-15 22:07:22,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:07:22,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-15 22:07:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:22,469 INFO L225 Difference]: With dead ends: 92 [2019-11-15 22:07:22,469 INFO L226 Difference]: Without dead ends: 84 [2019-11-15 22:07:22,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:07:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-15 22:07:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-11-15 22:07:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-15 22:07:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2019-11-15 22:07:22,530 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 10 [2019-11-15 22:07:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:22,531 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2019-11-15 22:07:22,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:07:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2019-11-15 22:07:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:07:22,532 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:22,532 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:07:22,533 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1591939830, now seen corresponding path program 1 times [2019-11-15 22:07:22,533 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:22,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489572614] [2019-11-15 22:07:22,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:22,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:22,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:22,639 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 22:07:22,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489572614] [2019-11-15 22:07:22,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:22,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:07:22,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96759613] [2019-11-15 22:07:22,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:07:22,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:22,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:07:22,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:07:22,644 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 5 states. [2019-11-15 22:07:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:22,982 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2019-11-15 22:07:22,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:07:22,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 22:07:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:22,984 INFO L225 Difference]: With dead ends: 96 [2019-11-15 22:07:22,985 INFO L226 Difference]: Without dead ends: 96 [2019-11-15 22:07:22,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:07:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-15 22:07:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2019-11-15 22:07:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 22:07:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2019-11-15 22:07:23,002 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 12 [2019-11-15 22:07:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:23,002 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2019-11-15 22:07:23,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:07:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2019-11-15 22:07:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:07:23,003 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:23,003 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:07:23,003 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:23,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1591939829, now seen corresponding path program 1 times [2019-11-15 22:07:23,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:23,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263857617] [2019-11-15 22:07:23,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,125 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 22:07:23,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263857617] [2019-11-15 22:07:23,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:23,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:07:23,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095630025] [2019-11-15 22:07:23,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:07:23,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:07:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:07:23,127 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2019-11-15 22:07:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:23,457 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2019-11-15 22:07:23,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:07:23,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 22:07:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:23,459 INFO L225 Difference]: With dead ends: 113 [2019-11-15 22:07:23,459 INFO L226 Difference]: Without dead ends: 113 [2019-11-15 22:07:23,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:07:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-15 22:07:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2019-11-15 22:07:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-15 22:07:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2019-11-15 22:07:23,469 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 12 [2019-11-15 22:07:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:23,470 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2019-11-15 22:07:23,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:07:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2019-11-15 22:07:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 22:07:23,471 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:23,471 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] [2019-11-15 22:07:23,472 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:23,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1442704695, now seen corresponding path program 1 times [2019-11-15 22:07:23,472 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:23,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47752149] [2019-11-15 22:07:23,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,554 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 22:07:23,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47752149] [2019-11-15 22:07:23,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:23,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:07:23,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728610332] [2019-11-15 22:07:23,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:07:23,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:23,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:07:23,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:07:23,556 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 5 states. [2019-11-15 22:07:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:23,856 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2019-11-15 22:07:23,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:07:23,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-15 22:07:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:23,858 INFO L225 Difference]: With dead ends: 107 [2019-11-15 22:07:23,858 INFO L226 Difference]: Without dead ends: 107 [2019-11-15 22:07:23,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:07:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-15 22:07:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2019-11-15 22:07:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-15 22:07:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2019-11-15 22:07:23,867 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 21 [2019-11-15 22:07:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:23,868 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2019-11-15 22:07:23,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:07:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2019-11-15 22:07:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:07:23,869 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:23,869 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] [2019-11-15 22:07:23,869 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:23,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1619881305, now seen corresponding path program 1 times [2019-11-15 22:07:23,870 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:23,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751051963] [2019-11-15 22:07:23,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:23,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:23,956 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 22:07:23,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751051963] [2019-11-15 22:07:23,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:23,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:07:23,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953816460] [2019-11-15 22:07:23,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:07:23,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:07:23,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:07:23,958 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 7 states. [2019-11-15 22:07:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:24,364 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2019-11-15 22:07:24,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:07:24,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-11-15 22:07:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:24,367 INFO L225 Difference]: With dead ends: 146 [2019-11-15 22:07:24,367 INFO L226 Difference]: Without dead ends: 146 [2019-11-15 22:07:24,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:07:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-15 22:07:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 106. [2019-11-15 22:07:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-15 22:07:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2019-11-15 22:07:24,384 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 22 [2019-11-15 22:07:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:24,384 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2019-11-15 22:07:24,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:07:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2019-11-15 22:07:24,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 22:07:24,385 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:24,390 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] [2019-11-15 22:07:24,391 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:24,391 INFO L82 PathProgramCache]: Analyzing trace with hash -835218597, now seen corresponding path program 1 times [2019-11-15 22:07:24,392 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:24,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269596929] [2019-11-15 22:07:24,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:24,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:24,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:07:24,490 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 22:07:24,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269596929] [2019-11-15 22:07:24,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:07:24,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:07:24,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323643804] [2019-11-15 22:07:24,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:07:24,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:07:24,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:07:24,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:07:24,492 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 6 states. [2019-11-15 22:07:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:07:24,710 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2019-11-15 22:07:24,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:07:24,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-15 22:07:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:07:24,711 INFO L225 Difference]: With dead ends: 136 [2019-11-15 22:07:24,711 INFO L226 Difference]: Without dead ends: 132 [2019-11-15 22:07:24,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:07:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-15 22:07:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-11-15 22:07:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-15 22:07:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2019-11-15 22:07:24,722 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 23 [2019-11-15 22:07:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:07:24,722 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2019-11-15 22:07:24,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:07:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2019-11-15 22:07:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 22:07:24,723 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:07:24,724 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, 1] [2019-11-15 22:07:24,724 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr29REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2019-11-15 22:07:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:07:24,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1875610221, now seen corresponding path program 1 times [2019-11-15 22:07:24,725 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:07:24,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110333436] [2019-11-15 22:07:24,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:24,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:07:24,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:07:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:07:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:07:24,789 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:07:24,790 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:07:24,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:07:24 BoogieIcfgContainer [2019-11-15 22:07:24,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:07:24,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:07:24,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:07:24,819 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:07:24,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:07:21" (3/4) ... [2019-11-15 22:07:24,822 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:07:24,870 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_85a521ae-d5bc-4133-af0c-230a392d1d89/bin/uautomizer/witness.graphml [2019-11-15 22:07:24,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:07:24,872 INFO L168 Benchmark]: Toolchain (without parser) took 4673.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -96.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,872 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:07:24,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,873 INFO L168 Benchmark]: Boogie Preprocessor took 126.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,874 INFO L168 Benchmark]: RCFGBuilder took 769.53 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,874 INFO L168 Benchmark]: TraceAbstraction took 2938.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,875 INFO L168 Benchmark]: Witness Printer took 51.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:07:24,877 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 782.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 126.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 769.53 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2938.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Witness Printer took 51.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 556]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={4:0}, malloc(sizeof(struct node))={4:0}] [L524] COND FALSE !(a == 0) VAL [a={4:0}, malloc(sizeof(struct node))={4:0}] [L525] p = a [L526] int i = 0; VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L527] i < 20 && __VERIFIER_nondet_int() [L527] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={4:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L527] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L540] p->h = 3 VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L541] p = a VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L542] EXPR p->h VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->h=3] [L542] COND FALSE !(p->h != 3) [L553] EXPR p->h VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->h=3] [L553] COND FALSE !(p->h != 3 || i > 20) [L555] p = a VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L556] EXPR p->n VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->n={15:17}] [L556] COND TRUE p->n != 0 [L557] EXPR p->n VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->n={15:17}] [L557] t = p->n [L558] free(p) VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, t={15:17}] [L558] free(p) VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, t={15:17}] [L558] free(p) [L559] p = t VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={15:17}, t={15:17}] [L556] p->n - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 108 locations, 37 error locations. Result: UNSAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 601 SDslu, 345 SDs, 0 SdLazy, 952 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 7132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 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 incorrect! Received shutdown request...