./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC --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 efc45e5708d4a9b560055cd5abf7b168f9024833 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 00:22:41,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:41,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:41,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:41,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:41,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:41,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:41,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:41,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:41,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:41,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:41,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:41,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:41,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:41,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:41,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:41,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:41,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:41,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:41,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:41,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:41,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:41,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:41,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:41,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:41,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:41,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:41,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:41,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:41,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:41,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:41,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:41,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:41,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:41,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:41,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:41,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:41,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:41,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:41,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:41,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:41,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:22:41,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:41,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:41,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:41,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:41,926 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:41,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:41,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:41,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:22:41,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:41,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:41,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:41,935 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:22:41,936 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:22:41,936 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:22:41,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:41,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:22:41,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:41,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:41,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:41,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:41,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:41,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:41,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:41,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:41,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:41,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:41,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:41,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efc45e5708d4a9b560055cd5abf7b168f9024833 [2021-10-11 00:22:42,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:42,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:42,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:42,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:42,305 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:42,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i [2021-10-11 00:22:42,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/data/f0bfabb78/34b6d1c44eec41dd8469249280305980/FLAGb171bf06e [2021-10-11 00:22:42,902 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:42,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i [2021-10-11 00:22:42,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/data/f0bfabb78/34b6d1c44eec41dd8469249280305980/FLAGb171bf06e [2021-10-11 00:22:43,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/data/f0bfabb78/34b6d1c44eec41dd8469249280305980 [2021-10-11 00:22:43,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:43,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:22:43,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:43,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:43,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:43,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a5c2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43, skipping insertion in model container [2021-10-11 00:22:43,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:43,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:43,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:43,610 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:43,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:43,712 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:43,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43 WrapperNode [2021-10-11 00:22:43,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:43,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:43,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:43,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:43,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... [2021-10-11 00:22:43,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:43,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:43,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:43,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:43,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:22:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:22:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-11 00:22:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-11 00:22:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-11 00:22:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-11 00:22:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-11 00:22:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2021-10-11 00:22:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrchr [2021-10-11 00:22:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:22:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-11 00:22:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-11 00:22:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-11 00:22:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-11 00:22:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-11 00:22:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-11 00:22:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-11 00:22:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-11 00:22:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-11 00:22:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-11 00:22:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-11 00:22:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-11 00:22:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-11 00:22:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-11 00:22:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-11 00:22:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-11 00:22:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-11 00:22:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-11 00:22:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-11 00:22:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-11 00:22:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-11 00:22:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-11 00:22:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-11 00:22:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-11 00:22:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-11 00:22:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-11 00:22:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-11 00:22:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-11 00:22:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-11 00:22:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-11 00:22:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-11 00:22:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-11 00:22:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-11 00:22:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-11 00:22:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-11 00:22:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-11 00:22:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-11 00:22:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-11 00:22:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-11 00:22:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-11 00:22:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure cstrchr [2021-10-11 00:22:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:22:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:22:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:22:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:22:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:44,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:44,416 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-11 00:22:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:44 BoogieIcfgContainer [2021-10-11 00:22:44,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:44,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:44,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:44,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:44,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:43" (1/3) ... [2021-10-11 00:22:44,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e26448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:44, skipping insertion in model container [2021-10-11 00:22:44,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:43" (2/3) ... [2021-10-11 00:22:44,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e26448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:44, skipping insertion in model container [2021-10-11 00:22:44,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:44" (3/3) ... [2021-10-11 00:22:44,432 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrchr_unsafe.i [2021-10-11 00:22:44,446 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:44,449 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-10-11 00:22:44,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-11 00:22:44,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:44,479 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:22:44,479 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:44,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:44,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:44,479 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:44,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:44,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2021-10-11 00:22:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:22:44,500 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:44,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:44,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183926, now seen corresponding path program 1 times [2021-10-11 00:22:44,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:44,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013587747] [2021-10-11 00:22:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:44,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013587747] [2021-10-11 00:22:44,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:44,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:22:44,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480753791] [2021-10-11 00:22:44,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:22:44,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:22:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:22:44,754 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2021-10-11 00:22:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:44,885 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-10-11 00:22:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:22:44,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 00:22:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:44,906 INFO L225 Difference]: With dead ends: 56 [2021-10-11 00:22:44,906 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 00:22:44,907 INFO L677 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 [2021-10-11 00:22:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 00:22:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-11 00:22:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 00:22:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-10-11 00:22:44,961 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 11 [2021-10-11 00:22:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:44,962 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-10-11 00:22:44,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:22:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-10-11 00:22:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:22:44,963 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:44,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:44,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:44,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183616, now seen corresponding path program 1 times [2021-10-11 00:22:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:44,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28107499] [2021-10-11 00:22:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:45,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28107499] [2021-10-11 00:22:45,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:45,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:22:45,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436902298] [2021-10-11 00:22:45,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:22:45,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:45,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:22:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:22:45,108 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2021-10-11 00:22:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:45,214 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-11 00:22:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:45,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:22:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:45,216 INFO L225 Difference]: With dead ends: 51 [2021-10-11 00:22:45,216 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 00:22:45,217 INFO L677 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 [2021-10-11 00:22:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 00:22:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 00:22:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:22:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-11 00:22:45,224 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2021-10-11 00:22:45,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:45,224 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-11 00:22:45,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:22:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-10-11 00:22:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:22:45,225 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:45,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:45,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:22:45,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:45,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183617, now seen corresponding path program 1 times [2021-10-11 00:22:45,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:45,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229896856] [2021-10-11 00:22:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:45,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229896856] [2021-10-11 00:22:45,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:45,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:45,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110477359] [2021-10-11 00:22:45,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:45,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:45,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:45,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:45,315 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2021-10-11 00:22:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:45,439 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-10-11 00:22:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:22:45,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 00:22:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:45,444 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:22:45,447 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 00:22:45,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 00:22:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-11 00:22:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 00:22:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-10-11 00:22:45,466 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2021-10-11 00:22:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:45,467 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-10-11 00:22:45,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-10-11 00:22:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:22:45,473 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:45,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:22:45,474 INFO L429 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183670, now seen corresponding path program 1 times [2021-10-11 00:22:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:45,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402091624] [2021-10-11 00:22:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:45,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402091624] [2021-10-11 00:22:45,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:45,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:22:45,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634859673] [2021-10-11 00:22:45,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:45,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:45,585 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2021-10-11 00:22:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:45,684 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-10-11 00:22:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:22:45,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 00:22:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:45,687 INFO L225 Difference]: With dead ends: 56 [2021-10-11 00:22:45,688 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 00:22:45,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 00:22:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-11 00:22:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 00:22:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-11 00:22:45,695 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 11 [2021-10-11 00:22:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:45,695 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-11 00:22:45,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-11 00:22:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:22:45,696 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:45,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:45,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:22:45,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1524243252, now seen corresponding path program 1 times [2021-10-11 00:22:45,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:45,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453231005] [2021-10-11 00:22:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:45,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453231005] [2021-10-11 00:22:45,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:45,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:45,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617805888] [2021-10-11 00:22:45,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:45,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:45,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:45,762 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2021-10-11 00:22:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:45,925 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-11 00:22:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:22:45,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 00:22:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:45,932 INFO L225 Difference]: With dead ends: 60 [2021-10-11 00:22:45,932 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 00:22:45,932 INFO L677 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 [2021-10-11 00:22:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 00:22:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-10-11 00:22:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 00:22:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-11 00:22:45,947 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 11 [2021-10-11 00:22:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:45,947 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-11 00:22:45,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-11 00:22:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:22:45,948 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:45,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:45,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:22:45,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:45,949 INFO L82 PathProgramCache]: Analyzing trace with hash -583933833, now seen corresponding path program 1 times [2021-10-11 00:22:45,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:45,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141629148] [2021-10-11 00:22:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:46,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141629148] [2021-10-11 00:22:46,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18262454] [2021-10-11 00:22:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:22:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:46,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:22:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:46,354 INFO L382 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 [2021-10-11 00:22:46,355 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:46,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:46,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:22:46,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-10-11 00:22:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:46,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:22:46,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-11 00:22:46,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102873121] [2021-10-11 00:22:46,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:22:46,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:46,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:22:46,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:46,452 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2021-10-11 00:22:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:46,687 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-11 00:22:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:22:46,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-10-11 00:22:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:46,688 INFO L225 Difference]: With dead ends: 59 [2021-10-11 00:22:46,688 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 00:22:46,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:22:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 00:22:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2021-10-11 00:22:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:22:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-11 00:22:46,693 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 15 [2021-10-11 00:22:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:46,693 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-11 00:22:46,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:22:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-10-11 00:22:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:22:46,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:46,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:46,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:22:46,920 INFO L429 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:46,920 INFO L82 PathProgramCache]: Analyzing trace with hash -269979680, now seen corresponding path program 1 times [2021-10-11 00:22:46,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:46,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102249439] [2021-10-11 00:22:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:47,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102249439] [2021-10-11 00:22:47,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:47,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:22:47,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685596980] [2021-10-11 00:22:47,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:22:47,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:47,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:22:47,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:22:47,041 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 10 states. [2021-10-11 00:22:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:47,343 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-10-11 00:22:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:22:47,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2021-10-11 00:22:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:47,344 INFO L225 Difference]: With dead ends: 47 [2021-10-11 00:22:47,344 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 00:22:47,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:22:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 00:22:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 00:22:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:22:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-11 00:22:47,348 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2021-10-11 00:22:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:47,348 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-11 00:22:47,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:22:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-10-11 00:22:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:22:47,349 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:47,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:47,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:22:47,349 INFO L429 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash -269979679, now seen corresponding path program 1 times [2021-10-11 00:22:47,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:47,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001278921] [2021-10-11 00:22:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:47,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001278921] [2021-10-11 00:22:47,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:47,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-11 00:22:47,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918055958] [2021-10-11 00:22:47,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:22:47,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:47,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:22:47,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:22:47,599 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 12 states. [2021-10-11 00:22:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:47,999 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-10-11 00:22:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:22:48,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2021-10-11 00:22:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:48,001 INFO L225 Difference]: With dead ends: 57 [2021-10-11 00:22:48,001 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 00:22:48,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:22:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 00:22:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-10-11 00:22:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 00:22:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-10-11 00:22:48,005 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 18 [2021-10-11 00:22:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:48,005 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-10-11 00:22:48,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:22:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-10-11 00:22:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:22:48,006 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:48,006 INFO L422 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] [2021-10-11 00:22:48,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:22:48,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash -463192456, now seen corresponding path program 1 times [2021-10-11 00:22:48,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:48,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138078905] [2021-10-11 00:22:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:48,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138078905] [2021-10-11 00:22:48,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:48,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:22:48,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798724426] [2021-10-11 00:22:48,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:48,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:48,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:48,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:48,067 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 5 states. [2021-10-11 00:22:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:48,202 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-11 00:22:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:48,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 00:22:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:48,203 INFO L225 Difference]: With dead ends: 55 [2021-10-11 00:22:48,203 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 00:22:48,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 00:22:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-11 00:22:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 00:22:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-10-11 00:22:48,206 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2021-10-11 00:22:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:48,207 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-10-11 00:22:48,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-10-11 00:22:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:22:48,208 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:48,208 INFO L422 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] [2021-10-11 00:22:48,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:22:48,208 INFO L429 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1542788213, now seen corresponding path program 1 times [2021-10-11 00:22:48,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:48,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147606970] [2021-10-11 00:22:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:48,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147606970] [2021-10-11 00:22:48,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:48,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-11 00:22:48,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773442851] [2021-10-11 00:22:48,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:22:48,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:48,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:22:48,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:22:48,436 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 14 states. [2021-10-11 00:22:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:48,966 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-10-11 00:22:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:22:48,966 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2021-10-11 00:22:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:48,970 INFO L225 Difference]: With dead ends: 81 [2021-10-11 00:22:48,970 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 00:22:48,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-10-11 00:22:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 00:22:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2021-10-11 00:22:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 00:22:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2021-10-11 00:22:48,997 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 24 [2021-10-11 00:22:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:48,997 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2021-10-11 00:22:48,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:22:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2021-10-11 00:22:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:22:48,998 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:48,998 INFO L422 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] [2021-10-11 00:22:48,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:22:48,999 INFO L429 AbstractCegarLoop]: === Iteration 11 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:49,000 INFO L82 PathProgramCache]: Analyzing trace with hash -45559689, now seen corresponding path program 1 times [2021-10-11 00:22:49,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182458668] [2021-10-11 00:22:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:49,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182458668] [2021-10-11 00:22:49,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:49,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-11 00:22:49,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288601227] [2021-10-11 00:22:49,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:22:49,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:22:49,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:22:49,294 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 15 states. [2021-10-11 00:22:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:49,825 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-10-11 00:22:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:22:49,826 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2021-10-11 00:22:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:49,827 INFO L225 Difference]: With dead ends: 101 [2021-10-11 00:22:49,827 INFO L226 Difference]: Without dead ends: 101 [2021-10-11 00:22:49,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-10-11 00:22:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-11 00:22:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2021-10-11 00:22:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 00:22:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-10-11 00:22:49,831 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 24 [2021-10-11 00:22:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:49,832 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-10-11 00:22:49,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:22:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-10-11 00:22:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:22:49,833 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:49,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:49,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:22:49,835 INFO L429 AbstractCegarLoop]: === Iteration 12 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1919056224, now seen corresponding path program 1 times [2021-10-11 00:22:49,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:49,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223253129] [2021-10-11 00:22:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-11 00:22:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:49,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223253129] [2021-10-11 00:22:49,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:49,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-11 00:22:49,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497809125] [2021-10-11 00:22:49,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:22:49,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:49,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:22:49,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:22:49,997 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 12 states. [2021-10-11 00:22:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:50,366 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-10-11 00:22:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:22:50,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2021-10-11 00:22:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:50,371 INFO L225 Difference]: With dead ends: 80 [2021-10-11 00:22:50,371 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 00:22:50,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:22:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 00:22:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-10-11 00:22:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-10-11 00:22:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-10-11 00:22:50,379 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 27 [2021-10-11 00:22:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:50,379 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-10-11 00:22:50,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:22:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-10-11 00:22:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:22:50,382 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:50,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:50,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 00:22:50,384 INFO L429 AbstractCegarLoop]: === Iteration 13 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1919056223, now seen corresponding path program 1 times [2021-10-11 00:22:50,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:50,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395108783] [2021-10-11 00:22:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-11 00:22:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-11 00:22:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395108783] [2021-10-11 00:22:50,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:50,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-11 00:22:50,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083475789] [2021-10-11 00:22:50,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:22:50,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:50,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:22:50,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:22:50,692 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 15 states. [2021-10-11 00:22:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:51,233 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2021-10-11 00:22:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:22:51,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2021-10-11 00:22:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:51,235 INFO L225 Difference]: With dead ends: 88 [2021-10-11 00:22:51,235 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 00:22:51,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-10-11 00:22:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 00:22:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-10-11 00:22:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 00:22:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-10-11 00:22:51,240 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 27 [2021-10-11 00:22:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:51,240 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-10-11 00:22:51,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:22:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-10-11 00:22:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:22:51,241 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:51,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:51,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 00:22:51,242 INFO L429 AbstractCegarLoop]: === Iteration 14 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:22:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1917209182, now seen corresponding path program 1 times [2021-10-11 00:22:51,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:51,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904594046] [2021-10-11 00:22:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:51,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:51,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:51,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:22:51,284 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:22:51,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 00:22:51,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:22:51 BoogieIcfgContainer [2021-10-11 00:22:51,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:22:51,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:22:51,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:22:51,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:22:51,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:44" (3/4) ... [2021-10-11 00:22:51,314 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:22:51,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41ce970-527b-4600-97c1-ea44eb81b3cf/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:22:51,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:22:51,367 INFO L168 Benchmark]: Toolchain (without parser) took 8166.93 ms. Allocated memory was 83.9 MB in the beginning and 163.6 MB in the end (delta: 79.7 MB). Free memory was 47.1 MB in the beginning and 63.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,367 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 81.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:51,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.09 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 70.3 MB in the end (delta: -23.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,368 INFO L168 Benchmark]: Boogie Preprocessor took 72.02 ms. Allocated memory is still 107.0 MB. Free memory was 70.3 MB in the beginning and 67.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,369 INFO L168 Benchmark]: RCFGBuilder took 629.44 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 65.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,369 INFO L168 Benchmark]: TraceAbstraction took 6891.56 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 64.5 MB in the beginning and 65.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,369 INFO L168 Benchmark]: Witness Printer took 49.23 ms. Allocated memory is still 163.6 MB. Free memory was 65.5 MB in the beginning and 63.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:51,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 81.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 516.09 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 70.3 MB in the end (delta: -23.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.02 ms. Allocated memory is still 107.0 MB. Free memory was 70.3 MB in the beginning and 67.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 629.44 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 65.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6891.56 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 64.5 MB in the beginning and 65.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. * Witness Printer took 49.23 ms. Allocated memory is still 163.6 MB. Free memory was 65.5 MB in the beginning and 63.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 537]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L536] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L526] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L527] return nondetString; VAL [\result={-1:0}, i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L536] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L536] char* s = build_nondet_String(); [L537] CALL cstrchr(s,__VERIFIER_nondet_int()) VAL [\old(c)=2, s={-1:0}] [L531] EXPR \read(*s) VAL [\old(c)=2, \read(*s)=0, c=2, s={-1:0}, s={-1:0}] [L531] *s != '\0' && *s != (char)c VAL [*s != '\0' && *s != (char)c=0, \old(c)=2, \read(*s)=0, c=2, s={-1:0}, s={-1:0}] [L531] COND FALSE !(*s != '\0' && *s != (char)c) [L533] EXPR \read(*s) VAL [\old(c)=2, \read(*s)=0, c=2, s={-1:0}, s={-1:0}] [L533] EXPR (*s == c) ? (char *) s : 0 VAL [(*s == c) ? (char *) s : 0={0:0}, \old(c)=2, \read(*s)=0, c=2, s={-1:0}, s={-1:0}] [L533] return ( (*s == c) ? (char *) s : 0 ); [L537] RET cstrchr(s,__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=2, cstrchr(s,__VERIFIER_nondet_int())={0:0}, s={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.8s, OverallIterations: 14, TraceHistogramMax: 2, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 450 SDtfs, 854 SDslu, 794 SDs, 0 SdLazy, 2615 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=13, 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, 13 MinimizatonAttempts, 66 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 22663 SizeOfPredicates, 3 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 4/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...