./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 978f701fee046cd9a3f43bfb12d114d1876d2f10 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:04:57,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:04:57,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:04:57,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:04:57,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:04:57,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:04:57,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:04:57,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:04:57,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:04:57,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:04:57,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:04:57,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:04:57,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:04:57,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:04:57,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:04:57,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:04:57,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:04:57,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:04:57,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:04:57,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:04:57,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:04:57,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:04:57,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:04:57,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:04:57,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:04:57,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:04:57,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:04:57,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:04:57,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:04:57,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:04:57,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:04:57,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:04:57,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:04:57,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:04:57,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:04:57,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:04:57,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:04:57,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:04:57,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:04:57,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:04:57,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:04:57,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:04:57,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:04:57,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:04:57,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:04:57,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:04:57,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:04:57,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:04:57,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:04:57,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:04:57,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:04:57,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:04:57,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:04:57,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:04:57,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:04:57,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:04:57,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:04:57,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:04:57,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:04:57,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:04:57,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:04:57,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:04:57,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:04:57,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:04:57,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:04:57,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:04:57,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:04:57,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:04:57,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:04:57,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:04:57,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 978f701fee046cd9a3f43bfb12d114d1876d2f10 [2020-10-19 18:04:58,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:04:58,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:04:58,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:04:58,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:04:58,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:04:58,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-10-19 18:04:58,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a351b92c/258a8444f7074e148c416e5c7141fa7d/FLAG5d682a7e5 [2020-10-19 18:04:58,801 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:04:58,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-10-19 18:04:58,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a351b92c/258a8444f7074e148c416e5c7141fa7d/FLAG5d682a7e5 [2020-10-19 18:04:59,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a351b92c/258a8444f7074e148c416e5c7141fa7d [2020-10-19 18:04:59,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:04:59,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:04:59,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:04:59,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:04:59,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:04:59,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db18929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59, skipping insertion in model container [2020-10-19 18:04:59,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:04:59,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:04:59,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:04:59,572 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:04:59,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:04:59,667 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:04:59,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59 WrapperNode [2020-10-19 18:04:59,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:04:59,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:04:59,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:04:59,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:04:59,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... [2020-10-19 18:04:59,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:04:59,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:04:59,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:04:59,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:04:59,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:04:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:04:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:04:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:04:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:04:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:04:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:04:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:04:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:04:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-19 18:04:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:04:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:04:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:04:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:04:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:04:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:04:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:04:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:04:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:04:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:04:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:04:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:04:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:04:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:04:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:04:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:04:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:04:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:04:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:04:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:04:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:04:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:04:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:04:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:04:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:04:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:04:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:04:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:04:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:04:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:04:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:04:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:04:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:04:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:04:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:04:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:04:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:04:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:04:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:04:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:04:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:04:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:04:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:04:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:04:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:04:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:04:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:04:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:04:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:04:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:04:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:04:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:04:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:04:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:04:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:04:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:04:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:04:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:04:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:04:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:04:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:04:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:04:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:04:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:04:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:04:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:04:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:04:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:04:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:04:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:04:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:04:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:04:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:04:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:04:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:04:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:04:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:04:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:04:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:04:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:04:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:04:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:04:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:04:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:04:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:04:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:04:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:04:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:04:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:04:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:04:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:04:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:04:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:04:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:04:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:04:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:04:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:04:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:04:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-19 18:04:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:04:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:04:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:04:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:04:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:04:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:04:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:04:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:00,390 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:00,390 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 18:05:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:00 BoogieIcfgContainer [2020-10-19 18:05:00,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:00,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:00,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:00,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:00,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:04:59" (1/3) ... [2020-10-19 18:05:00,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14467119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:00, skipping insertion in model container [2020-10-19 18:05:00,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:04:59" (2/3) ... [2020-10-19 18:05:00,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14467119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:00, skipping insertion in model container [2020-10-19 18:05:00,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:00" (3/3) ... [2020-10-19 18:05:00,402 INFO L111 eAbstractionObserver]: Analyzing ICFG 960521-1_1-1.i [2020-10-19 18:05:00,413 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:00,420 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-19 18:05:00,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-19 18:05:00,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:00,450 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:00,450 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:00,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:00,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:00,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:00,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:00,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-19 18:05:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:05:00,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:00,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:00,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash -334073084, now seen corresponding path program 1 times [2020-10-19 18:05:00,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:00,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431738104] [2020-10-19 18:05:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:00,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431738104] [2020-10-19 18:05:00,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:00,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:00,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236499610] [2020-10-19 18:05:00,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:05:00,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:00,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:05:00,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:05:00,775 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-10-19 18:05:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:00,924 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-10-19 18:05:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:05:00,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:05:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:00,937 INFO L225 Difference]: With dead ends: 62 [2020-10-19 18:05:00,937 INFO L226 Difference]: Without dead ends: 59 [2020-10-19 18:05:00,939 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 [2020-10-19 18:05:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-19 18:05:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-19 18:05:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 18:05:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-19 18:05:00,980 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 9 [2020-10-19 18:05:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:00,981 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-19 18:05:00,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:05:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-19 18:05:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:00,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:00,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:00,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:05:00,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1766545344, now seen corresponding path program 1 times [2020-10-19 18:05:00,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:00,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694884706] [2020-10-19 18:05:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:01,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694884706] [2020-10-19 18:05:01,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:01,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:01,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449634346] [2020-10-19 18:05:01,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:01,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:01,103 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 4 states. [2020-10-19 18:05:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:01,246 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-19 18:05:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:01,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:05:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:01,248 INFO L225 Difference]: With dead ends: 58 [2020-10-19 18:05:01,248 INFO L226 Difference]: Without dead ends: 58 [2020-10-19 18:05:01,250 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 [2020-10-19 18:05:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-19 18:05:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-19 18:05:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 18:05:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-19 18:05:01,258 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2020-10-19 18:05:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:01,259 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-19 18:05:01,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-19 18:05:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:01,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:01,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:01,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:05:01,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:01,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1766545343, now seen corresponding path program 1 times [2020-10-19 18:05:01,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:01,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972778723] [2020-10-19 18:05:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:01,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972778723] [2020-10-19 18:05:01,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:01,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:05:01,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754978119] [2020-10-19 18:05:01,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:01,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:01,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:01,384 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2020-10-19 18:05:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:01,616 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2020-10-19 18:05:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:01,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-19 18:05:01,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:01,618 INFO L225 Difference]: With dead ends: 109 [2020-10-19 18:05:01,618 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:05:01,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:05:01,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 62. [2020-10-19 18:05:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-19 18:05:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-19 18:05:01,629 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-10-19 18:05:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:01,630 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-19 18:05:01,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-19 18:05:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:05:01,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:01,632 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:01,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:05:01,633 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:01,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1136421434, now seen corresponding path program 1 times [2020-10-19 18:05:01,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:01,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607837687] [2020-10-19 18:05:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:01,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607837687] [2020-10-19 18:05:01,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983404788] [2020-10-19 18:05:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:05:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:01,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:05:01,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:01,988 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-10-19 18:05:01,989 INFO L384 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 1 case distinctions, treesize of input 13 treesize of output 15 [2020-10-19 18:05:01,990 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:02,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:02,010 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:05:02,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:29 [2020-10-19 18:05:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:02,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:05:02,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-10-19 18:05:02,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806708677] [2020-10-19 18:05:02,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:02,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:02,048 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2020-10-19 18:05:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:02,142 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-10-19 18:05:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:02,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:05:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:02,144 INFO L225 Difference]: With dead ends: 108 [2020-10-19 18:05:02,144 INFO L226 Difference]: Without dead ends: 108 [2020-10-19 18:05:02,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-19 18:05:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2020-10-19 18:05:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 18:05:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-19 18:05:02,152 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 12 [2020-10-19 18:05:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:02,153 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-19 18:05:02,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-19 18:05:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:05:02,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:02,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:02,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:02,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1785184100, now seen corresponding path program 1 times [2020-10-19 18:05:02,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:02,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758133985] [2020-10-19 18:05:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:02,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:02,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758133985] [2020-10-19 18:05:02,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:02,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:02,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185243599] [2020-10-19 18:05:02,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:02,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:02,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:02,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:02,502 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 4 states. [2020-10-19 18:05:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:02,658 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-10-19 18:05:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:02,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:05:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:02,660 INFO L225 Difference]: With dead ends: 54 [2020-10-19 18:05:02,660 INFO L226 Difference]: Without dead ends: 54 [2020-10-19 18:05:02,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-19 18:05:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-19 18:05:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 18:05:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-19 18:05:02,666 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 15 [2020-10-19 18:05:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:02,667 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-19 18:05:02,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-19 18:05:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:05:02,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:02,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:02,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:05:02,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:02,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1785184099, now seen corresponding path program 1 times [2020-10-19 18:05:02,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:02,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991110374] [2020-10-19 18:05:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991110374] [2020-10-19 18:05:02,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:02,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:02,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916656907] [2020-10-19 18:05:02,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:02,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:02,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:02,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:02,776 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-10-19 18:05:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:03,083 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-19 18:05:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:05:03,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-19 18:05:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:03,085 INFO L225 Difference]: With dead ends: 99 [2020-10-19 18:05:03,085 INFO L226 Difference]: Without dead ends: 99 [2020-10-19 18:05:03,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-19 18:05:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2020-10-19 18:05:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 18:05:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-19 18:05:03,093 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2020-10-19 18:05:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:03,093 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-19 18:05:03,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-19 18:05:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:05:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:03,095 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:03,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:05:03,095 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 139066936, now seen corresponding path program 1 times [2020-10-19 18:05:03,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:03,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561254614] [2020-10-19 18:05:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:03,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561254614] [2020-10-19 18:05:03,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725458941] [2020-10-19 18:05:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:05:03,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:03,356 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-10-19 18:05:03,357 INFO L384 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 1 case distinctions, treesize of input 13 treesize of output 15 [2020-10-19 18:05:03,357 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:03,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:03,371 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:05:03,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:35 [2020-10-19 18:05:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:03,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:05:03,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-19 18:05:03,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977380363] [2020-10-19 18:05:03,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:03,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:03,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:05:03,432 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 6 states. [2020-10-19 18:05:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:03,581 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-10-19 18:05:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:03,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 18:05:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:03,583 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:05:03,583 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:05:03,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:05:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:05:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 71. [2020-10-19 18:05:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 18:05:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-10-19 18:05:03,590 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 17 [2020-10-19 18:05:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:03,590 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-10-19 18:05:03,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-10-19 18:05:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:05:03,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:03,592 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:03,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:03,806 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2134408578, now seen corresponding path program 1 times [2020-10-19 18:05:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:03,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890948480] [2020-10-19 18:05:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:03,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890948480] [2020-10-19 18:05:03,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557902587] [2020-10-19 18:05:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:03,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:05:03,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:04,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:05:04,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-19 18:05:04,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862634365] [2020-10-19 18:05:04,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:04,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:04,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:04,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:04,030 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 5 states. [2020-10-19 18:05:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:04,081 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2020-10-19 18:05:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:04,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:05:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:04,082 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:05:04,083 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 18:05:04,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 18:05:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-10-19 18:05:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:05:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-19 18:05:04,089 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 18 [2020-10-19 18:05:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:04,089 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-19 18:05:04,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-19 18:05:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:05:04,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:04,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:04,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:04,303 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:04,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1700324605, now seen corresponding path program 1 times [2020-10-19 18:05:04,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:04,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948965666] [2020-10-19 18:05:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948965666] [2020-10-19 18:05:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119841278] [2020-10-19 18:05:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:05:04,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:04,561 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-10-19 18:05:04,562 INFO L384 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 1 case distinctions, treesize of input 13 treesize of output 15 [2020-10-19 18:05:04,562 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:04,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:04,577 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:05:04,578 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:35 [2020-10-19 18:05:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:05:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-19 18:05:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665361571] [2020-10-19 18:05:04,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:05:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:05:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:05:04,676 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2020-10-19 18:05:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:05,249 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2020-10-19 18:05:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:05:05,250 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-19 18:05:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:05,253 INFO L225 Difference]: With dead ends: 112 [2020-10-19 18:05:05,253 INFO L226 Difference]: Without dead ends: 112 [2020-10-19 18:05:05,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:05:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-19 18:05:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 73. [2020-10-19 18:05:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 18:05:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-19 18:05:05,260 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 20 [2020-10-19 18:05:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:05,261 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-19 18:05:05,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:05:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-19 18:05:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:05:05,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:05,262 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] [2020-10-19 18:05:05,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:05,480 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash -247582013, now seen corresponding path program 1 times [2020-10-19 18:05:05,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:05,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014031419] [2020-10-19 18:05:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-19 18:05:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:05:05,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014031419] [2020-10-19 18:05:05,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:05,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:05,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873437060] [2020-10-19 18:05:05,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:05,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:05,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:05,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:05,571 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2020-10-19 18:05:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:05,863 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-10-19 18:05:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:05:05,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-19 18:05:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:05,865 INFO L225 Difference]: With dead ends: 71 [2020-10-19 18:05:05,865 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 18:05:05,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:05:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 18:05:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-19 18:05:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 18:05:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-19 18:05:05,871 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 22 [2020-10-19 18:05:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:05,871 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-19 18:05:05,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-19 18:05:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:05:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:05,873 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] [2020-10-19 18:05:05,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:05:05,873 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:05:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash -247582012, now seen corresponding path program 1 times [2020-10-19 18:05:05,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:05,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376592874] [2020-10-19 18:05:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:05,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:05,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:05,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:05:05,932 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:05:05,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:05:05,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:05:05 BoogieIcfgContainer [2020-10-19 18:05:05,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:05:05,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:05:05,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:05:05,985 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:05:05,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:00" (3/4) ... [2020-10-19 18:05:05,989 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:05:06,093 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:05:06,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:05:06,101 INFO L168 Benchmark]: Toolchain (without parser) took 6973.27 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 325.6 MB). Free memory was 958.6 MB in the beginning and 1.3 GB in the end (delta: -340.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:06,102 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:06,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:06,103 INFO L168 Benchmark]: Boogie Preprocessor took 90.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:06,103 INFO L168 Benchmark]: RCFGBuilder took 633.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:06,104 INFO L168 Benchmark]: TraceAbstraction took 5590.39 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 179.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -234.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:06,108 INFO L168 Benchmark]: Witness Printer took 109.01 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:06,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 539.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 633.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5590.39 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 179.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -234.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 109.01 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 544]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L523] int *a, *b; [L524] int n; VAL [\old(a)=53, \old(a)=56, \old(b)=57, \old(b)=50, \old(n)=55, a={0:0}, b={0:0}, n=0] [L536] n = 1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=1] [L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L540] a = malloc(n * sizeof(*a)) [L541] b = malloc(n * sizeof(*b)) [L542] EXPR b++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L542] *b++ = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L543] CALL foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, n=1] [L528] int i; [L529] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L529] COND TRUE i < n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L530] a[i] = n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L529] i++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L529] COND FALSE !(i < n) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L531] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L531] COND FALSE !(i < n - 1) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L543] RET foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L544] b[-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 82 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 836 SDslu, 760 SDs, 0 SdLazy, 1083 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 222 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 21313 SizeOfPredicates, 16 NumberOfNonLiveVariables, 650 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 10/21 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...