./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/reverse_array_alloca_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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:27:35,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:27:35,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:27:35,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:27:35,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:27:35,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:27:35,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:27:35,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:27:35,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:27:35,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:27:35,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:27:35,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:27:35,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:27:35,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:27:35,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:27:35,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:27:35,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:27:35,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:27:35,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:27:35,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:27:35,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:27:35,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:27:35,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:27:35,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:27:35,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:27:35,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:27:35,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:27:35,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:27:35,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:27:35,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:27:35,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:27:35,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:27:35,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:27:35,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:27:35,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:27:35,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:27:35,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:27:35,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:27:35,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:27:35,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:27:35,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:27:35,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:27:35,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:27:35,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:27:35,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:27:35,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:27:35,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:27:35,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:27:35,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:27:35,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:27:35,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:27:35,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:27:35,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:27:35,864 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:27:35,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:27:35,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:27:35,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:27:35,865 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:27:35,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:27:35,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:27:35,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:27:35,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:27:35,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:27:35,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:27:35,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:27:35,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:27:35,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:27:35,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:27:35,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:27:35,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:27:35,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2020-10-26 03:27:36,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:27:36,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:27:36,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:27:36,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:27:36,317 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:27:36,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-10-26 03:27:36,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3347e472/76d1469bcd1842469b2a8f7bb7a1f005/FLAGe5f982d8a [2020-10-26 03:27:37,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:27:37,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-10-26 03:27:37,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3347e472/76d1469bcd1842469b2a8f7bb7a1f005/FLAGe5f982d8a [2020-10-26 03:27:37,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3347e472/76d1469bcd1842469b2a8f7bb7a1f005 [2020-10-26 03:27:37,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:27:37,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:27:37,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:27:37,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:27:37,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:27:37,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:27:37" (1/1) ... [2020-10-26 03:27:37,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77709009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:37, skipping insertion in model container [2020-10-26 03:27:37,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:27:37" (1/1) ... [2020-10-26 03:27:37,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:27:37,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:27:37,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:27:37,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:27:37,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:27:38,016 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:27:38,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38 WrapperNode [2020-10-26 03:27:38,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:27:38,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:27:38,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:27:38,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:27:38,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (1/1) ... [2020-10-26 03:27:38,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:27:38,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:27:38,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:27:38,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:27:38,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (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 [2020-10-26 03:27:38,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:27:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:27:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:27:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:27:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:27:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:27:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:27:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:27:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:27:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:27:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:27:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:27:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:27:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:27:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:27:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:27:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:27:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:27:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:27:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:27:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:27:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:27:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:27:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:27:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:27:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:27:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:27:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:27:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:27:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:27:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:27:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:27:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:27:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:27:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:27:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:27:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:27:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:27:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:27:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:27:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:27:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:27:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:27:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:27:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:27:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:27:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:27:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:27:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:27:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:27:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:27:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:27:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:27:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:27:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:27:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:27:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:27:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:27:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:27:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:27:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:27:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:27:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:27:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:27:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:27:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:27:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:27:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:27:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:27:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:27:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:27:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:27:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:27:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:27:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:27:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:27:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:27:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:27:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:27:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:27:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:27:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 03:27:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:27:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:27:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:27:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:27:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:27:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:27:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:27:38,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:27:38,712 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:27:38,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:38 BoogieIcfgContainer [2020-10-26 03:27:38,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:27:38,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:27:38,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:27:38,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:27:38,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:27:37" (1/3) ... [2020-10-26 03:27:38,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6fc0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:27:38, skipping insertion in model container [2020-10-26 03:27:38,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:38" (2/3) ... [2020-10-26 03:27:38,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6fc0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:27:38, skipping insertion in model container [2020-10-26 03:27:38,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:38" (3/3) ... [2020-10-26 03:27:38,732 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i [2020-10-26 03:27:38,746 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:27:38,759 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-10-26 03:27:38,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-10-26 03:27:38,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:27:38,814 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:27:38,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:27:38,815 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:27:38,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:27:38,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:27:38,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:27:38,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:27:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-26 03:27:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:38,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:38,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:38,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:38,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2020-10-26 03:27:38,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:38,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833196604] [2020-10-26 03:27:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833196604] [2020-10-26 03:27:39,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:39,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:27:39,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782760439] [2020-10-26 03:27:39,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:27:39,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:39,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:27:39,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:27:39,276 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 6 states. [2020-10-26 03:27:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:39,724 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-26 03:27:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:27:39,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-26 03:27:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:39,744 INFO L225 Difference]: With dead ends: 125 [2020-10-26 03:27:39,745 INFO L226 Difference]: Without dead ends: 121 [2020-10-26 03:27:39,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:27:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-26 03:27:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 65. [2020-10-26 03:27:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 03:27:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-26 03:27:39,792 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2020-10-26 03:27:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:39,793 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-26 03:27:39,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:27:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-26 03:27:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:39,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:39,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:39,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:27:39,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953402, now seen corresponding path program 1 times [2020-10-26 03:27:39,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:39,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241863107] [2020-10-26 03:27:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:39,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:39,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241863107] [2020-10-26 03:27:39,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:39,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:27:39,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515675441] [2020-10-26 03:27:39,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:27:39,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:27:39,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:27:39,888 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 4 states. [2020-10-26 03:27:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:40,040 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-26 03:27:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:27:40,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 03:27:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:40,042 INFO L225 Difference]: With dead ends: 60 [2020-10-26 03:27:40,042 INFO L226 Difference]: Without dead ends: 60 [2020-10-26 03:27:40,044 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 [2020-10-26 03:27:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-26 03:27:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-26 03:27:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-26 03:27:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-26 03:27:40,056 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 11 [2020-10-26 03:27:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:40,057 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-26 03:27:40,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:27:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-26 03:27:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:40,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:40,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:40,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:27:40,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2020-10-26 03:27:40,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:40,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088291040] [2020-10-26 03:27:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:40,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088291040] [2020-10-26 03:27:40,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:40,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:40,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423138104] [2020-10-26 03:27:40,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:40,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:40,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:40,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:40,130 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 5 states. [2020-10-26 03:27:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:40,292 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-26 03:27:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:27:40,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:27:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:40,294 INFO L225 Difference]: With dead ends: 64 [2020-10-26 03:27:40,294 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 03:27:40,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:27:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 03:27:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-26 03:27:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 03:27:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-26 03:27:40,302 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 11 [2020-10-26 03:27:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:40,302 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-26 03:27:40,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-26 03:27:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:27:40,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:40,304 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:40,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:27:40,304 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1271599478, now seen corresponding path program 1 times [2020-10-26 03:27:40,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:40,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369631113] [2020-10-26 03:27:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 03:27:40,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369631113] [2020-10-26 03:27:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:40,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144932011] [2020-10-26 03:27:40,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:27:40,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:27:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:27:40,399 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 4 states. [2020-10-26 03:27:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:40,522 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-26 03:27:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:27:40,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 03:27:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:40,524 INFO L225 Difference]: With dead ends: 60 [2020-10-26 03:27:40,524 INFO L226 Difference]: Without dead ends: 60 [2020-10-26 03:27:40,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-26 03:27:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-26 03:27:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-26 03:27:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-26 03:27:40,530 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 15 [2020-10-26 03:27:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:40,530 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-26 03:27:40,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:27:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-26 03:27:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:27:40,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:40,532 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:40,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:27:40,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2080946104, now seen corresponding path program 1 times [2020-10-26 03:27:40,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:40,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759281144] [2020-10-26 03:27:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:40,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759281144] [2020-10-26 03:27:40,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429530624] [2020-10-26 03:27:40,723 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 [2020-10-26 03:27:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:27:40,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:41,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:27:41,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-26 03:27:41,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279284542] [2020-10-26 03:27:41,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:41,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:41,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:41,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:41,011 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 5 states. [2020-10-26 03:27:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:41,092 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-26 03:27:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:27:41,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 03:27:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:41,095 INFO L225 Difference]: With dead ends: 109 [2020-10-26 03:27:41,095 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 03:27:41,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 03:27:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 66. [2020-10-26 03:27:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 03:27:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-26 03:27:41,110 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 15 [2020-10-26 03:27:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:41,112 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-26 03:27:41,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-26 03:27:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:27:41,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:41,113 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:41,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:41,329 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash -591541108, now seen corresponding path program 1 times [2020-10-26 03:27:41,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:41,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554310784] [2020-10-26 03:27:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:41,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554310784] [2020-10-26 03:27:41,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960222184] [2020-10-26 03:27:41,466 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 [2020-10-26 03:27:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-26 03:27:41,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:41,668 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 8 treesize of output 7 [2020-10-26 03:27:41,669 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:41,683 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:41,683 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:41,684 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2020-10-26 03:27:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:41,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:41,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-26 03:27:41,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295373929] [2020-10-26 03:27:41,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:27:41,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:27:41,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:27:41,798 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 11 states. [2020-10-26 03:27:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:42,327 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2020-10-26 03:27:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:27:42,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-26 03:27:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:42,329 INFO L225 Difference]: With dead ends: 170 [2020-10-26 03:27:42,330 INFO L226 Difference]: Without dead ends: 170 [2020-10-26 03:27:42,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:27:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-26 03:27:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 76. [2020-10-26 03:27:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 03:27:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-26 03:27:42,338 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 15 [2020-10-26 03:27:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:42,339 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-26 03:27:42,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:27:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-26 03:27:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:27:42,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:42,340 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:42,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:42,554 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1400887734, now seen corresponding path program 1 times [2020-10-26 03:27:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:42,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248998254] [2020-10-26 03:27:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:42,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248998254] [2020-10-26 03:27:42,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202176491] [2020-10-26 03:27:42,681 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 [2020-10-26 03:27:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:42,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-26 03:27:42,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:42,869 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 8 treesize of output 7 [2020-10-26 03:27:42,869 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:42,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:42,883 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:42,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2020-10-26 03:27:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:43,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:43,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-10-26 03:27:43,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947519636] [2020-10-26 03:27:43,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:27:43,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:27:43,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:27:43,008 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 11 states. [2020-10-26 03:27:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:43,473 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2020-10-26 03:27:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:27:43,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-26 03:27:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:43,476 INFO L225 Difference]: With dead ends: 126 [2020-10-26 03:27:43,476 INFO L226 Difference]: Without dead ends: 126 [2020-10-26 03:27:43,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:27:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-26 03:27:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 78. [2020-10-26 03:27:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 03:27:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-26 03:27:43,491 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 15 [2020-10-26 03:27:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:43,494 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-26 03:27:43,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:27:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-26 03:27:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:27:43,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:43,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:43,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:43,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502603, now seen corresponding path program 1 times [2020-10-26 03:27:43,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:43,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533165588] [2020-10-26 03:27:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:27:43,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533165588] [2020-10-26 03:27:43,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:43,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:27:43,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678523269] [2020-10-26 03:27:43,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:43,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:43,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:43,749 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 5 states. [2020-10-26 03:27:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:43,898 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-10-26 03:27:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:27:43,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 03:27:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:43,899 INFO L225 Difference]: With dead ends: 89 [2020-10-26 03:27:43,899 INFO L226 Difference]: Without dead ends: 89 [2020-10-26 03:27:43,900 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 [2020-10-26 03:27:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-26 03:27:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-10-26 03:27:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-26 03:27:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-26 03:27:43,905 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 17 [2020-10-26 03:27:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:43,906 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-26 03:27:43,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-26 03:27:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:27:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:43,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:43,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:27:43,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502644, now seen corresponding path program 1 times [2020-10-26 03:27:43,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:43,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615798072] [2020-10-26 03:27:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:43,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615798072] [2020-10-26 03:27:43,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490304163] [2020-10-26 03:27:43,983 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 [2020-10-26 03:27:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:44,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:27:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:44,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:44,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-10-26 03:27:44,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079310336] [2020-10-26 03:27:44,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:27:44,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:44,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:27:44,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:27:44,160 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 9 states. [2020-10-26 03:27:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:44,466 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-26 03:27:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:27:44,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-26 03:27:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:44,470 INFO L225 Difference]: With dead ends: 86 [2020-10-26 03:27:44,470 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 03:27:44,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:27:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 03:27:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-26 03:27:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-26 03:27:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-26 03:27:44,483 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 17 [2020-10-26 03:27:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:44,487 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-26 03:27:44,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:27:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-26 03:27:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:27:44,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:44,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:44,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:44,701 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:27:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:44,702 INFO L82 PathProgramCache]: Analyzing trace with hash 94437838, now seen corresponding path program 1 times [2020-10-26 03:27:44,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:44,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287010626] [2020-10-26 03:27:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:27:44,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:27:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:27:44,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:27:44,789 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:27:44,789 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:27:44,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:27:44,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:27:44 BoogieIcfgContainer [2020-10-26 03:27:44,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:27:44,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:27:44,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:27:44,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:27:44,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:38" (3/4) ... [2020-10-26 03:27:44,836 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:27:44,919 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:27:44,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:27:44,924 INFO L168 Benchmark]: Toolchain (without parser) took 7510.34 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 24.2 MB in the beginning and 95.2 MB in the end (delta: -71.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:44,925 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 48.2 MB. Free memory was 27.8 MB in the beginning and 27.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:27:44,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.71 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 39.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:44,928 INFO L168 Benchmark]: Boogie Preprocessor took 59.38 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:44,931 INFO L168 Benchmark]: RCFGBuilder took 636.87 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 25.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:44,932 INFO L168 Benchmark]: TraceAbstraction took 6113.38 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 25.3 MB in the beginning and 97.3 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:27:44,932 INFO L168 Benchmark]: Witness Printer took 87.04 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 95.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:44,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 48.2 MB. Free memory was 27.8 MB in the beginning and 27.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.71 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 39.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.38 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 636.87 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 25.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6113.38 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 25.3 MB in the beginning and 97.3 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.04 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 95.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (length*sizeof(int))={2:0}, __VERIFIER_nondet_int()=-1, arr={2:0}, i=0, length=1] [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L521] COND FALSE !(i < length) VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, i=1, length=1] [L526] COND TRUE i