./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.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/array-memsafety/cstrpbrk_unsafe.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 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:56:18,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:56:18,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:56:18,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:56:18,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:56:18,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:56:18,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:56:18,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:56:18,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:56:18,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:56:18,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:56:18,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:56:18,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:56:18,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:56:18,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:56:18,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:56:18,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:56:18,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:56:18,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:56:18,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:56:18,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:56:18,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:56:18,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:56:18,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:56:18,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:56:18,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:56:18,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:56:18,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:56:18,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:56:18,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:56:18,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:56:18,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:56:18,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:56:18,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:56:18,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:56:18,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:56:18,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:56:18,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:56:18,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:56:18,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:56:18,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:56:18,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:56:18,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:56:18,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:56:18,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:56:18,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:56:18,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:56:18,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:56:18,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:56:18,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:56:18,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:56:18,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:56:18,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:56:18,903 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:56:18,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:56:18,903 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:56:18,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:56:18,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:56:18,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:56:18,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:56:18,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:56:18,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:56:18,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:56:18,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:56:18,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:56:18,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:56:18,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:56:18,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:56:18,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:56:18,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:56:18,909 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 -> 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 [2020-10-19 17:56:19,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:56:19,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:56:19,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:56:19,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:56:19,219 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:56:19,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-10-19 17:56:19,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a78932a5/2ee3010a7cce48ab9fd9df9a1173327d/FLAG0c88c2f37 [2020-10-19 17:56:19,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:56:19,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-10-19 17:56:19,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a78932a5/2ee3010a7cce48ab9fd9df9a1173327d/FLAG0c88c2f37 [2020-10-19 17:56:20,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a78932a5/2ee3010a7cce48ab9fd9df9a1173327d [2020-10-19 17:56:20,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:56:20,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:56:20,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:56:20,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:56:20,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:56:20,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f90e574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20, skipping insertion in model container [2020-10-19 17:56:20,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:56:20,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:56:20,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:56:20,547 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:56:20,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:56:20,644 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:56:20,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20 WrapperNode [2020-10-19 17:56:20,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:56:20,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:56:20,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:56:20,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:56:20,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (1/1) ... [2020-10-19 17:56:20,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:56:20,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:56:20,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:56:20,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:56:20,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (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 17:56:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:56:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:56:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:56:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:56:20,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:56:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:56:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:56:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2020-10-19 17:56:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2020-10-19 17:56:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:56:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:56:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:56:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:56:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:56:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:56:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:56:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:56:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:56:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:56:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:56:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:56:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:56:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:56:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:56:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:56:20,821 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:56:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:56:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:56:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:56:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:56:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:56:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:56:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:56:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:56:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:56:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:56:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:56:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:56:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:56:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:56:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:56:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:56:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:56:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:56:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:56:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:56:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:56:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:56:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:56:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:56:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:56:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:56:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:56:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:56:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:56:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:56:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:56:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:56:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:56:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:56:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:56:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:56:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:56:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:56:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:56:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:56:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:56:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:56:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:56:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:56:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:56:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:56:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:56:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:56:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:56:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:56:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:56:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:56:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:56:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:56:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:56:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:56:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:56:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:56:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:56:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:56:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:56:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:56:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:56:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:56:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:56:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:56:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:56:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:56:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:56:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:56:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:56:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:56:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:56:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:56:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:56:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:56:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:56:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:56:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:56:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:56:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:56:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:56:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:56:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:56:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:56:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:56:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:56:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 17:56:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2020-10-19 17:56:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 17:56:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:56:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure cstrpbrk [2020-10-19 17:56:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:56:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:56:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:56:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:56:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:56:21,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:56:21,499 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 17:56:21,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:56:21 BoogieIcfgContainer [2020-10-19 17:56:21,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:56:21,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:56:21,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:56:21,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:56:21,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:56:20" (1/3) ... [2020-10-19 17:56:21,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5e7ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:56:21, skipping insertion in model container [2020-10-19 17:56:21,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:56:20" (2/3) ... [2020-10-19 17:56:21,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5e7ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:56:21, skipping insertion in model container [2020-10-19 17:56:21,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:56:21" (3/3) ... [2020-10-19 17:56:21,511 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe.i [2020-10-19 17:56:21,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:56:21,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-10-19 17:56:21,545 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-10-19 17:56:21,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:56:21,565 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:56:21,566 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:56:21,566 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:56:21,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:56:21,566 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:56:21,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:56:21,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:56:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-19 17:56:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:56:21,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:21,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:21,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999972, now seen corresponding path program 1 times [2020-10-19 17:56:21,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:21,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587817416] [2020-10-19 17:56:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:21,832 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 17:56:21,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587817416] [2020-10-19 17:56:21,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:21,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:56:21,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29186104] [2020-10-19 17:56:21,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:56:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:56:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:56:21,857 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-10-19 17:56:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:22,065 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-10-19 17:56:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:56:22,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 17:56:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:22,078 INFO L225 Difference]: With dead ends: 71 [2020-10-19 17:56:22,078 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 17:56:22,080 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 17:56:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 17:56:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 17:56:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 17:56:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-19 17:56:22,126 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 11 [2020-10-19 17:56:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:22,127 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-19 17:56:22,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:56:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-19 17:56:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:56:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:22,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:22,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:56:22,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:22,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:22,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999971, now seen corresponding path program 1 times [2020-10-19 17:56:22,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:22,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761490865] [2020-10-19 17:56:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,228 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 17:56:22,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761490865] [2020-10-19 17:56:22,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:22,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:56:22,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602825878] [2020-10-19 17:56:22,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:56:22,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:56:22,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:56:22,233 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 5 states. [2020-10-19 17:56:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:22,499 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-10-19 17:56:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:56:22,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:56:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:22,502 INFO L225 Difference]: With dead ends: 67 [2020-10-19 17:56:22,502 INFO L226 Difference]: Without dead ends: 67 [2020-10-19 17:56:22,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:56:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-19 17:56:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-19 17:56:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 17:56:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-10-19 17:56:22,524 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 11 [2020-10-19 17:56:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:22,525 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-10-19 17:56:22,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:56:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-10-19 17:56:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:56:22,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:22,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:22,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:56:22,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:22,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999918, now seen corresponding path program 1 times [2020-10-19 17:56:22,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:22,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058734782] [2020-10-19 17:56:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,592 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 17:56:22,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058734782] [2020-10-19 17:56:22,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:22,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:56:22,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421641316] [2020-10-19 17:56:22,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:56:22,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:22,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:56:22,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:56:22,595 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2020-10-19 17:56:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:22,743 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-10-19 17:56:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:56:22,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:56:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:22,747 INFO L225 Difference]: With dead ends: 73 [2020-10-19 17:56:22,748 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 17:56:22,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:56:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 17:56:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-19 17:56:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 17:56:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-19 17:56:22,760 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 11 [2020-10-19 17:56:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:22,760 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-19 17:56:22,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:56:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-19 17:56:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:56:22,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:22,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:22,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:56:22,763 INFO L429 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940336, now seen corresponding path program 1 times [2020-10-19 17:56:22,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:22,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621047945] [2020-10-19 17:56:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:22,841 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 17:56:22,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621047945] [2020-10-19 17:56:22,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:22,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:56:22,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009939449] [2020-10-19 17:56:22,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:56:22,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:56:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:56:22,844 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2020-10-19 17:56:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:23,056 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-19 17:56:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:56:23,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:56:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:23,058 INFO L225 Difference]: With dead ends: 77 [2020-10-19 17:56:23,058 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 17:56:23,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:56:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 17:56:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-10-19 17:56:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 17:56:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-10-19 17:56:23,068 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 11 [2020-10-19 17:56:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:23,068 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-10-19 17:56:23,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:56:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-10-19 17:56:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 17:56:23,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:23,070 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:23,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 17:56:23,071 INFO L429 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:23,072 INFO L82 PathProgramCache]: Analyzing trace with hash 670453331, now seen corresponding path program 1 times [2020-10-19 17:56:23,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:23,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261742653] [2020-10-19 17:56:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:23,166 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 17:56:23,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261742653] [2020-10-19 17:56:23,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446250270] [2020-10-19 17:56:23,167 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 17:56:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:56:23,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:23,388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:23,388 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:23,399 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:23,400 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:23,400 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:56:23,479 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 17:56:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:23,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-19 17:56:23,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639656225] [2020-10-19 17:56:23,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:56:23,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:23,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:56:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:56:23,481 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 7 states. [2020-10-19 17:56:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:23,703 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-19 17:56:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:56:23,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 17:56:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:23,705 INFO L225 Difference]: With dead ends: 76 [2020-10-19 17:56:23,705 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:56:23,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:56:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:56:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-19 17:56:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 17:56:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-19 17:56:23,721 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 15 [2020-10-19 17:56:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:23,721 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-19 17:56:23,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:56:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-19 17:56:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 17:56:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:23,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:23,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:56:23,932 INFO L429 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash 140003118, now seen corresponding path program 1 times [2020-10-19 17:56:23,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:23,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663144175] [2020-10-19 17:56:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:24,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:56:24,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663144175] [2020-10-19 17:56:24,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710449162] [2020-10-19 17:56:24,191 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 17:56:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:24,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 17:56:24,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:24,331 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:24,332 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:24,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:24,335 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:24,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:56:24,404 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:24,404 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 17:56:24,406 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:24,419 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 17:56:24,420 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:56:24,421 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-19 17:56:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:56:24,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:24,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2020-10-19 17:56:24,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398597465] [2020-10-19 17:56:24,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 17:56:24,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:24,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 17:56:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:56:24,434 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 14 states. [2020-10-19 17:56:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:25,026 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-10-19 17:56:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:56:25,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-19 17:56:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:25,028 INFO L225 Difference]: With dead ends: 69 [2020-10-19 17:56:25,028 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 17:56:25,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:56:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 17:56:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-19 17:56:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-19 17:56:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-10-19 17:56:25,042 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 28 [2020-10-19 17:56:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:25,043 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-10-19 17:56:25,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 17:56:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-10-19 17:56:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 17:56:25,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:25,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:25,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:56:25,249 INFO L429 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 140003119, now seen corresponding path program 1 times [2020-10-19 17:56:25,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:25,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500438473] [2020-10-19 17:56:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:25,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:56:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500438473] [2020-10-19 17:56:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102745207] [2020-10-19 17:56:25,615 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 17:56:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:25,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-19 17:56:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:25,728 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:25,728 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:25,731 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:25,732 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:25,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 17:56:25,940 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:25,941 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 17:56:25,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:25,963 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 17:56:25,965 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:56:25,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-10-19 17:56:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:56:26,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:26,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2020-10-19 17:56:26,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172483485] [2020-10-19 17:56:26,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 17:56:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:26,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 17:56:26,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-10-19 17:56:26,058 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 24 states. [2020-10-19 17:56:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:27,416 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-10-19 17:56:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:56:27,418 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-10-19 17:56:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:27,420 INFO L225 Difference]: With dead ends: 140 [2020-10-19 17:56:27,420 INFO L226 Difference]: Without dead ends: 140 [2020-10-19 17:56:27,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 17:56:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-19 17:56:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2020-10-19 17:56:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-19 17:56:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2020-10-19 17:56:27,433 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 28 [2020-10-19 17:56:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:27,434 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2020-10-19 17:56:27,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 17:56:27,434 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2020-10-19 17:56:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 17:56:27,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:27,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:27,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:56:27,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash 562704945, now seen corresponding path program 1 times [2020-10-19 17:56:27,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:27,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721680088] [2020-10-19 17:56:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:56:27,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721680088] [2020-10-19 17:56:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391829380] [2020-10-19 17:56:27,879 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 17:56:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:27,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-19 17:56:27,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:28,020 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:28,021 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:28,043 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:28,044 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:28,053 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,054 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:14 [2020-10-19 17:56:28,169 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:28,170 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 17:56:28,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:28,177 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:28,189 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-10-19 17:56:28,189 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:28,199 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:28,199 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:9 [2020-10-19 17:56:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:56:28,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:28,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2020-10-19 17:56:28,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230616157] [2020-10-19 17:56:28,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 17:56:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 17:56:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:56:28,207 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand 16 states. [2020-10-19 17:56:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:28,997 INFO L93 Difference]: Finished difference Result 130 states and 167 transitions. [2020-10-19 17:56:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:56:29,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2020-10-19 17:56:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:29,002 INFO L225 Difference]: With dead ends: 130 [2020-10-19 17:56:29,002 INFO L226 Difference]: Without dead ends: 130 [2020-10-19 17:56:29,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-10-19 17:56:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-19 17:56:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 67. [2020-10-19 17:56:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 17:56:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-19 17:56:29,017 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 28 [2020-10-19 17:56:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:29,017 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-19 17:56:29,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 17:56:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-19 17:56:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:56:29,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:29,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:29,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:56:29,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash 124645684, now seen corresponding path program 1 times [2020-10-19 17:56:29,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:29,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740932632] [2020-10-19 17:56:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 17:56:29,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740932632] [2020-10-19 17:56:29,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:29,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 17:56:29,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017688284] [2020-10-19 17:56:29,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 17:56:29,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 17:56:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:56:29,329 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-10-19 17:56:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:29,669 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-19 17:56:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:56:29,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-19 17:56:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:29,671 INFO L225 Difference]: With dead ends: 67 [2020-10-19 17:56:29,671 INFO L226 Difference]: Without dead ends: 67 [2020-10-19 17:56:29,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:56:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-19 17:56:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2020-10-19 17:56:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-19 17:56:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-10-19 17:56:29,681 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 32 [2020-10-19 17:56:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:29,682 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-10-19 17:56:29,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 17:56:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-10-19 17:56:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:56:29,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:29,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:29,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 17:56:29,685 INFO L429 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash 124645685, now seen corresponding path program 1 times [2020-10-19 17:56:29,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:29,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037992628] [2020-10-19 17:56:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:56:29,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037992628] [2020-10-19 17:56:29,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:29,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 17:56:29,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765362575] [2020-10-19 17:56:29,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:56:29,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:29,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:56:29,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:56:29,850 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 12 states. [2020-10-19 17:56:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:30,428 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-10-19 17:56:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:56:30,429 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-19 17:56:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:30,431 INFO L225 Difference]: With dead ends: 125 [2020-10-19 17:56:30,431 INFO L226 Difference]: Without dead ends: 125 [2020-10-19 17:56:30,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:56:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-19 17:56:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2020-10-19 17:56:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 17:56:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2020-10-19 17:56:30,440 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 32 [2020-10-19 17:56:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:30,440 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2020-10-19 17:56:30,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:56:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-10-19 17:56:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:56:30,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:30,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:30,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 17:56:30,442 INFO L429 AbstractCegarLoop]: === Iteration 11 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1155217993, now seen corresponding path program 1 times [2020-10-19 17:56:30,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051600331] [2020-10-19 17:56:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:56:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 17:56:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 17:56:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:56:30,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051600331] [2020-10-19 17:56:30,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:30,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 17:56:30,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076789230] [2020-10-19 17:56:30,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:56:30,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:56:30,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:56:30,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:56:30,680 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand 12 states. [2020-10-19 17:56:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:31,200 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2020-10-19 17:56:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:56:31,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-19 17:56:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:31,203 INFO L225 Difference]: With dead ends: 124 [2020-10-19 17:56:31,203 INFO L226 Difference]: Without dead ends: 124 [2020-10-19 17:56:31,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:56:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-19 17:56:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2020-10-19 17:56:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 17:56:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-10-19 17:56:31,208 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 32 [2020-10-19 17:56:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:31,209 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-10-19 17:56:31,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:56:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-10-19 17:56:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 17:56:31,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:31,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:31,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 17:56:31,210 INFO L429 AbstractCegarLoop]: === Iteration 12 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:56:31,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash -431506202, now seen corresponding path program 1 times [2020-10-19 17:56:31,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:56:31,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507500011] [2020-10-19 17:56:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:56:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:56:31,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:56:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:56:31,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:56:31,283 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 17:56:31,286 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:56:31,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 17:56:31,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:56:31 BoogieIcfgContainer [2020-10-19 17:56:31,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:56:31,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:56:31,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:56:31,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:56:31,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:56:21" (3/4) ... [2020-10-19 17:56:31,351 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 17:56:31,442 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:56:31,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:56:31,447 INFO L168 Benchmark]: Toolchain (without parser) took 11408.79 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.8 MB). Free memory was 954.6 MB in the beginning and 1.3 GB in the end (delta: -302.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:31,447 INFO L168 Benchmark]: CDTParser took 0.27 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 17:56:31,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:31,450 INFO L168 Benchmark]: Boogie Preprocessor took 73.54 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:31,450 INFO L168 Benchmark]: RCFGBuilder took 781.98 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: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:31,450 INFO L168 Benchmark]: TraceAbstraction took 9844.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 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: -194.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:56:31,451 INFO L168 Benchmark]: Witness Printer took 94.75 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:56:31,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 603.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.54 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 781.98 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: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9844.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 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: -194.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 94.75 ms. Allocated memory is still 1.3 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: 548]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L546] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L527] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L528] return nondetString; VAL [\result={-1:0}, i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L546] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L546] char* s1 = build_nondet_String(); [L547] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L527] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L528] return nondetString; VAL [\result={-2:0}, i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L547] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-2:0}, s1={-1:0}] [L547] char* s2 = build_nondet_String(); [L548] CALL cstrpbrk(s1,s2) VAL [s1={-1:0}, s2={-2:0}] [L532] const char *sc1; [L533] const char *s; [L534] int c; [L535] sc1 = s1 VAL [s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L535] EXPR \read(*sc1) VAL [\read(*sc1)=0, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L535] COND FALSE !(*sc1 != '\0') [L543] return 0; VAL [\result={0:0}, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L548] RET cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={-1:0}, s2={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 88 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.7s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 530 SDtfs, 1635 SDslu, 1192 SDs, 0 SdLazy, 3686 SolverSat, 154 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 208 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 323 ConstructedInterpolants, 15 QuantifiedInterpolants, 52063 SizeOfPredicates, 30 NumberOfNonLiveVariables, 502 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 42/76 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...