./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.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/openbsd_cstrnlen-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:27:30,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:27:30,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:27:30,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:27:30,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:27:30,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:27:30,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:27:30,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:27:30,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:27:30,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:27:30,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:27:30,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:27:30,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:27:30,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:27:30,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:27:30,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:27:30,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:27:30,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:27:30,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:27:30,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:27:30,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:27:30,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:27:30,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:27:30,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:27:30,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:27:30,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:27:30,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:27:30,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:27:30,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:27:30,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:27:30,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:27:30,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:27:30,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:27:30,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:27:30,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:27:30,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:27:30,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:27:30,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:27:30,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:27:30,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:27:30,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:27:30,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:27:30,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:27:30,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:27:30,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:27:30,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:27:30,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:27:30,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:27:30,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:27:30,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:27:30,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:27:30,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:27:30,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:27:30,317 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:27:30,317 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:27:30,318 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:27:30,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:27:30,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:27:30,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:27:30,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:27:30,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:27:30,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:27:30,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:27:30,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:27:30,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:27:30,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:27:30,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:27:30,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:27:30,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:27:30,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:27:30,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2020-10-26 03:27:30,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:27:30,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:27:30,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:27:30,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:27:30,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:27:30,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-26 03:27:30,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cd6f953/9af3ab6bee794aba81ae614f87557c41/FLAG9d04ef8d5 [2020-10-26 03:27:31,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:27:31,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-26 03:27:31,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cd6f953/9af3ab6bee794aba81ae614f87557c41/FLAG9d04ef8d5 [2020-10-26 03:27:31,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cd6f953/9af3ab6bee794aba81ae614f87557c41 [2020-10-26 03:27:31,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:27:31,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:27:31,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:27:31,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:27:31,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:27:31,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:27:31" (1/1) ... [2020-10-26 03:27:31,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:31, skipping insertion in model container [2020-10-26 03:27:31,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:27:31" (1/1) ... [2020-10-26 03:27:31,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:27:31,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:27:32,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:27:32,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:27:32,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:27:32,506 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:27:32,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32 WrapperNode [2020-10-26 03:27:32,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:27:32,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:27:32,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:27:32,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:27:32,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (1/1) ... [2020-10-26 03:27:32,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:27:32,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:27:32,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:27:32,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:27:32,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (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 03:27:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:27:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:27:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:27:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:27:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:27:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:27:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:27:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrnlen [2020-10-26 03:27:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:27:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:27:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:27:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:27:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:27:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:27:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:27:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:27:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:27:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:27:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:27:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:27:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:27:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:27:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:27:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:27:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:27:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:27:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:27:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:27:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:27:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:27:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:27:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:27:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:27:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:27:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:27:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:27:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:27:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:27:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:27:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:27:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:27:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:27:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:27:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:27:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:27:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:27:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:27:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:27:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:27:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:27:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:27:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:27:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:27:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:27:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:27:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:27:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:27:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:27:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:27:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:27:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:27:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:27:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:27:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:27:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:27:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:27:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:27:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:27:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:27:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:27:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:27:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:27:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:27:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:27:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:27:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:27:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:27:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:27:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:27:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:27:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:27:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:27:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:27:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:27:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:27:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:27:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:27:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:27:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:27:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:27:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:27:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:27:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:27:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:27:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:27:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:27:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:27:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:27:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:27:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:27:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:27:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:27:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:27:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:27:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:27:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:27:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:27:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:27:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 03:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure cstrnlen [2020-10-26 03:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:27:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:27:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:27:33,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:27:33,402 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:27:33,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:33 BoogieIcfgContainer [2020-10-26 03:27:33,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:27:33,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:27:33,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:27:33,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:27:33,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:27:31" (1/3) ... [2020-10-26 03:27:33,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77acb69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:27:33, skipping insertion in model container [2020-10-26 03:27:33,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:27:32" (2/3) ... [2020-10-26 03:27:33,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77acb69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:27:33, skipping insertion in model container [2020-10-26 03:27:33,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:33" (3/3) ... [2020-10-26 03:27:33,416 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2020-10-26 03:27:33,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:27:33,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-26 03:27:33,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-26 03:27:33,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:27:33,477 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:27:33,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:27:33,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:27:33,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:27:33,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:27:33,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:27:33,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:27:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-26 03:27:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:33,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:33,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:33,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash 787746653, now seen corresponding path program 1 times [2020-10-26 03:27:33,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:33,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217447943] [2020-10-26 03:27:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:33,732 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 03:27:33,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217447943] [2020-10-26 03:27:33,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:33,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:27:33,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733538589] [2020-10-26 03:27:33,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:27:33,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:27:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:27:33,759 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-26 03:27:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:33,860 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-26 03:27:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:27:33,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-26 03:27:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:33,872 INFO L225 Difference]: With dead ends: 37 [2020-10-26 03:27:33,873 INFO L226 Difference]: Without dead ends: 34 [2020-10-26 03:27:33,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:27:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-26 03:27:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-26 03:27:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 03:27:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 03:27:33,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 11 [2020-10-26 03:27:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:33,913 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 03:27:33,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:27:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 03:27:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:33,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:33,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:33,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:27:33,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:33,921 INFO L82 PathProgramCache]: Analyzing trace with hash 787746343, now seen corresponding path program 1 times [2020-10-26 03:27:33,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:33,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817088632] [2020-10-26 03:27:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,018 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 03:27:34,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817088632] [2020-10-26 03:27:34,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:34,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:27:34,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364367128] [2020-10-26 03:27:34,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:27:34,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:27:34,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:27:34,024 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-26 03:27:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:34,163 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-26 03:27:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:27:34,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 03:27:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:34,166 INFO L225 Difference]: With dead ends: 32 [2020-10-26 03:27:34,166 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 03:27:34,167 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 03:27:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 03:27:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-26 03:27:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 03:27:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 03:27:34,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2020-10-26 03:27:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:34,174 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 03:27:34,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:27:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-26 03:27:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:34,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:34,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:34,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:27:34,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 787746344, now seen corresponding path program 1 times [2020-10-26 03:27:34,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:34,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405842993] [2020-10-26 03:27:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,291 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 03:27:34,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405842993] [2020-10-26 03:27:34,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:34,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:34,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961036973] [2020-10-26 03:27:34,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:34,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:34,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:34,295 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-26 03:27:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:34,440 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-26 03:27:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:27:34,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:27:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:34,442 INFO L225 Difference]: With dead ends: 31 [2020-10-26 03:27:34,442 INFO L226 Difference]: Without dead ends: 31 [2020-10-26 03:27:34,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:27:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-26 03:27:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-26 03:27:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-26 03:27:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-26 03:27:34,455 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 11 [2020-10-26 03:27:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:34,456 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-26 03:27:34,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-26 03:27:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:34,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:34,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:34,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:27:34,458 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash 787746397, now seen corresponding path program 1 times [2020-10-26 03:27:34,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:34,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965745562] [2020-10-26 03:27:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,554 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 03:27:34,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965745562] [2020-10-26 03:27:34,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:34,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:27:34,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492570371] [2020-10-26 03:27:34,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:34,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:34,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:34,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:34,559 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-26 03:27:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:34,724 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-26 03:27:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:27:34,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:27:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:34,728 INFO L225 Difference]: With dead ends: 39 [2020-10-26 03:27:34,728 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 03:27:34,729 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 03:27:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 03:27:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-26 03:27:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 03:27:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-26 03:27:34,739 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2020-10-26 03:27:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:34,740 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-26 03:27:34,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-26 03:27:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:27:34,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:34,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:34,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:27:34,742 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:34,742 INFO L82 PathProgramCache]: Analyzing trace with hash 789593439, now seen corresponding path program 1 times [2020-10-26 03:27:34,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:34,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583918648] [2020-10-26 03:27:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:34,844 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 03:27:34,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583918648] [2020-10-26 03:27:34,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:34,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:34,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884727742] [2020-10-26 03:27:34,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:34,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:34,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:34,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:34,847 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-26 03:27:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:35,088 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-26 03:27:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:27:35,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:27:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:35,091 INFO L225 Difference]: With dead ends: 43 [2020-10-26 03:27:35,091 INFO L226 Difference]: Without dead ends: 43 [2020-10-26 03:27:35,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:27:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-26 03:27:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-26 03:27:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:27:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-26 03:27:35,099 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2020-10-26 03:27:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:35,099 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-26 03:27:35,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-26 03:27:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:27:35,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:35,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:35,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:27:35,101 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 849748688, now seen corresponding path program 1 times [2020-10-26 03:27:35,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:35,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799357638] [2020-10-26 03:27:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:35,264 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 03:27:35,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799357638] [2020-10-26 03:27:35,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:35,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:27:35,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068503902] [2020-10-26 03:27:35,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:27:35,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:35,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:27:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:27:35,273 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-26 03:27:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:35,501 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-26 03:27:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:27:35,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-26 03:27:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:35,505 INFO L225 Difference]: With dead ends: 35 [2020-10-26 03:27:35,505 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 03:27:35,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 03:27:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 03:27:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 03:27:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-26 03:27:35,516 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2020-10-26 03:27:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:35,517 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-26 03:27:35,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:27:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-26 03:27:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:27:35,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:35,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:35,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:27:35,521 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash 849748689, now seen corresponding path program 1 times [2020-10-26 03:27:35,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:35,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365343378] [2020-10-26 03:27:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:35,777 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 03:27:35,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365343378] [2020-10-26 03:27:35,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:35,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:27:35,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283240254] [2020-10-26 03:27:35,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:27:35,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:35,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:27:35,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:35,781 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 8 states. [2020-10-26 03:27:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:36,140 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-26 03:27:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:27:36,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-26 03:27:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:36,144 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:27:36,144 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:27:36,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:27:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:27:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-26 03:27:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 03:27:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-26 03:27:36,152 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 16 [2020-10-26 03:27:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:36,152 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-26 03:27:36,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:27:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-26 03:27:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:27:36,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:36,154 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:36,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:27:36,154 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:36,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2015068958, now seen corresponding path program 1 times [2020-10-26 03:27:36,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:36,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160294402] [2020-10-26 03:27:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:36,311 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 03:27:36,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160294402] [2020-10-26 03:27:36,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942971145] [2020-10-26 03:27:36,313 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 03:27:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:36,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:27:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:36,689 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:27:36,690 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:36,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:36,705 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:36,706 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:27:36,835 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 03:27:36,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:36,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-26 03:27:36,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652800057] [2020-10-26 03:27:36,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:27:36,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:27:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:27:36,838 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2020-10-26 03:27:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:37,121 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-26 03:27:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:27:37,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-26 03:27:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:37,123 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:27:37,124 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:27:37,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:27:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-26 03:27:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 03:27:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-26 03:27:37,130 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2020-10-26 03:27:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:37,130 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-26 03:27:37,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:27:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-26 03:27:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:27:37,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:37,132 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:37,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-26 03:27:37,344 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1695397446, now seen corresponding path program 1 times [2020-10-26 03:27:37,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:37,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468326150] [2020-10-26 03:27:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:37,414 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 03:27:37,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468326150] [2020-10-26 03:27:37,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:37,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:37,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260822341] [2020-10-26 03:27:37,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:27:37,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:37,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:27:37,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:27:37,417 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-10-26 03:27:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:37,535 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-26 03:27:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:27:37,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 03:27:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:37,537 INFO L225 Difference]: With dead ends: 36 [2020-10-26 03:27:37,537 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 03:27:37,537 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 03:27:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 03:27:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 03:27:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:27:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-26 03:27:37,542 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2020-10-26 03:27:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:37,542 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-26 03:27:37,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:27:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-26 03:27:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:27:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:37,544 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 03:27:37,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:27:37,544 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash 964873536, now seen corresponding path program 1 times [2020-10-26 03:27:37,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:37,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161449966] [2020-10-26 03:27:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 03:27:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:37,713 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 03:27:37,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161449966] [2020-10-26 03:27:37,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:37,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:27:37,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239129100] [2020-10-26 03:27:37,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:27:37,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:37,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:27:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:27:37,716 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2020-10-26 03:27:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:38,082 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-26 03:27:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:27:38,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:27:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:38,088 INFO L225 Difference]: With dead ends: 58 [2020-10-26 03:27:38,088 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 03:27:38,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:27:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 03:27:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-10-26 03:27:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 03:27:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-26 03:27:38,107 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 21 [2020-10-26 03:27:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:38,108 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-26 03:27:38,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:27:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-26 03:27:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:27:38,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:38,116 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 03:27:38,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:27:38,117 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:38,118 INFO L82 PathProgramCache]: Analyzing trace with hash -46243714, now seen corresponding path program 1 times [2020-10-26 03:27:38,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:38,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632268452] [2020-10-26 03:27:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 03:27:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:38,322 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 03:27:38,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632268452] [2020-10-26 03:27:38,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:38,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 03:27:38,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753496060] [2020-10-26 03:27:38,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:27:38,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:38,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:27:38,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:27:38,325 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-26 03:27:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:38,677 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-26 03:27:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:27:38,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-26 03:27:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:38,680 INFO L225 Difference]: With dead ends: 55 [2020-10-26 03:27:38,680 INFO L226 Difference]: Without dead ends: 51 [2020-10-26 03:27:38,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:27:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-26 03:27:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-10-26 03:27:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:27:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-26 03:27:38,687 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 21 [2020-10-26 03:27:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:38,688 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-26 03:27:38,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:27:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-26 03:27:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:27:38,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:38,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:38,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 03:27:38,690 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1827219927, now seen corresponding path program 1 times [2020-10-26 03:27:38,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:38,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478385701] [2020-10-26 03:27:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:38,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478385701] [2020-10-26 03:27:38,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426930750] [2020-10-26 03:27:38,868 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 03:27:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:39,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 03:27:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:39,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 03:27:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:39,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:39,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-26 03:27:39,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775991293] [2020-10-26 03:27:39,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:27:39,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:39,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:27:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:27:39,215 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2020-10-26 03:27:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:39,722 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-26 03:27:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:27:39,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-26 03:27:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:39,724 INFO L225 Difference]: With dead ends: 64 [2020-10-26 03:27:39,724 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 03:27:39,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:27:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 03:27:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-26 03:27:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 03:27:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-26 03:27:39,732 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 22 [2020-10-26 03:27:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:39,732 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-26 03:27:39,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:27:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-26 03:27:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:27:39,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:39,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:39,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-26 03:27:39,949 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1187883691, now seen corresponding path program 1 times [2020-10-26 03:27:39,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059075858] [2020-10-26 03:27:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:40,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059075858] [2020-10-26 03:27:40,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:40,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-26 03:27:40,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120841188] [2020-10-26 03:27:40,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:27:40,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:27:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:27:40,217 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 10 states. [2020-10-26 03:27:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:40,667 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-26 03:27:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 03:27:40,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-26 03:27:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:40,670 INFO L225 Difference]: With dead ends: 83 [2020-10-26 03:27:40,670 INFO L226 Difference]: Without dead ends: 83 [2020-10-26 03:27:40,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-26 03:27:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-26 03:27:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-26 03:27:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-26 03:27:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-26 03:27:40,683 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 22 [2020-10-26 03:27:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:40,683 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-26 03:27:40,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:27:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-26 03:27:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:27:40,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:40,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:40,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 03:27:40,686 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:40,686 INFO L82 PathProgramCache]: Analyzing trace with hash 166815337, now seen corresponding path program 1 times [2020-10-26 03:27:40,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:40,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423436234] [2020-10-26 03:27:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:41,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423436234] [2020-10-26 03:27:41,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:41,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 03:27:41,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872992939] [2020-10-26 03:27:41,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:27:41,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:27:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:27:41,018 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-10-26 03:27:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:41,532 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-26 03:27:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 03:27:41,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-26 03:27:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:41,535 INFO L225 Difference]: With dead ends: 100 [2020-10-26 03:27:41,535 INFO L226 Difference]: Without dead ends: 100 [2020-10-26 03:27:41,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-26 03:27:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-26 03:27:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 69. [2020-10-26 03:27:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-26 03:27:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-26 03:27:41,544 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 22 [2020-10-26 03:27:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:41,544 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-26 03:27:41,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:27:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-26 03:27:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 03:27:41,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:41,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:41,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 03:27:41,546 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:41,547 INFO L82 PathProgramCache]: Analyzing trace with hash -862082627, now seen corresponding path program 1 times [2020-10-26 03:27:41,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:41,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771237336] [2020-10-26 03:27:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 03:27:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,663 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 03:27:41,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771237336] [2020-10-26 03:27:41,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:27:41,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:27:41,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271783754] [2020-10-26 03:27:41,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:27:41,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:41,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:27:41,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:41,667 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 5 states. [2020-10-26 03:27:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:41,769 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-26 03:27:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:27:41,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-26 03:27:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:41,771 INFO L225 Difference]: With dead ends: 68 [2020-10-26 03:27:41,771 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 03:27:41,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:27:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 03:27:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 03:27:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 03:27:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-26 03:27:41,781 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2020-10-26 03:27:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:41,782 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-26 03:27:41,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:27:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-26 03:27:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:27:41,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:41,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:41,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 03:27:41,783 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash 869619206, now seen corresponding path program 1 times [2020-10-26 03:27:41,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263900106] [2020-10-26 03:27:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:41,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263900106] [2020-10-26 03:27:41,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164163654] [2020-10-26 03:27:41,938 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 03:27:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:42,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 03:27:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:42,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:42,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-26 03:27:42,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011157591] [2020-10-26 03:27:42,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 03:27:42,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:42,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 03:27:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:27:42,425 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2020-10-26 03:27:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:42,881 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-26 03:27:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:27:42,882 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-26 03:27:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:42,883 INFO L225 Difference]: With dead ends: 39 [2020-10-26 03:27:42,884 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 03:27:42,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:27:42,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 03:27:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-26 03:27:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 03:27:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-26 03:27:42,888 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-10-26 03:27:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:42,888 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-26 03:27:42,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 03:27:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-26 03:27:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:27:42,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:42,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:43,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-26 03:27:43,101 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:43,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2038559330, now seen corresponding path program 2 times [2020-10-26 03:27:43,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:43,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312597369] [2020-10-26 03:27:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:43,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312597369] [2020-10-26 03:27:43,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428846769] [2020-10-26 03:27:43,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 03:27:43,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:27:43,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:27:43,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-26 03:27:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:43,962 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-26 03:27:43,962 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:43,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:43,978 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:27:43,979 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-26 03:27:44,336 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:44,337 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-10-26 03:27:44,338 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:27:44,367 INFO L625 ElimStorePlain]: treesize reduction 8, result has 55.6 percent of original size [2020-10-26 03:27:44,370 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:44,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2020-10-26 03:27:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:44,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:44,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2020-10-26 03:27:44,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004465884] [2020-10-26 03:27:44,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 03:27:44,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 03:27:44,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-26 03:27:44,380 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 21 states. [2020-10-26 03:27:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:45,275 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-26 03:27:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 03:27:45,276 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2020-10-26 03:27:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:45,277 INFO L225 Difference]: With dead ends: 54 [2020-10-26 03:27:45,277 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 03:27:45,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-10-26 03:27:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 03:27:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-26 03:27:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 03:27:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-26 03:27:45,281 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2020-10-26 03:27:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:45,281 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-26 03:27:45,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 03:27:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-26 03:27:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:27:45,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:45,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:45,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:45,492 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1010508549, now seen corresponding path program 3 times [2020-10-26 03:27:45,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:45,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008992856] [2020-10-26 03:27:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:45,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008992856] [2020-10-26 03:27:45,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961065682] [2020-10-26 03:27:45,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:45,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-26 03:27:45,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:27:45,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 03:27:45,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:46,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-26 03:27:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604110239] [2020-10-26 03:27:46,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 03:27:46,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 03:27:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:27:46,319 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2020-10-26 03:27:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:46,995 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-26 03:27:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:27:46,996 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2020-10-26 03:27:46,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:46,997 INFO L225 Difference]: With dead ends: 46 [2020-10-26 03:27:46,997 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 03:27:46,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:27:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 03:27:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-26 03:27:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 03:27:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-26 03:27:47,001 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2020-10-26 03:27:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:47,002 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-26 03:27:47,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 03:27:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-26 03:27:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 03:27:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:47,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:47,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-26 03:27:47,214 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1250412755, now seen corresponding path program 4 times [2020-10-26 03:27:47,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:47,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471682575] [2020-10-26 03:27:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:47,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471682575] [2020-10-26 03:27:47,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774427232] [2020-10-26 03:27:47,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:47,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 03:27:47,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:27:47,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-26 03:27:47,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:47,927 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:27:47,928 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:47,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:47,940 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:47,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:27:48,176 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-26 03:27:48,176 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:48,183 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:48,184 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:48,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-26 03:27:48,657 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-10-26 03:27:48,659 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:27:48,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:48,693 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-26 03:27:48,696 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:48,697 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-26 03:27:48,697 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:48,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:48,717 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:48,717 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-10-26 03:27:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:48,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:48,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2020-10-26 03:27:48,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521964918] [2020-10-26 03:27:48,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 03:27:48,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 03:27:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-26 03:27:48,727 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 25 states. [2020-10-26 03:27:49,670 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-26 03:27:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:50,560 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-26 03:27:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 03:27:50,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 42 [2020-10-26 03:27:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:50,562 INFO L225 Difference]: With dead ends: 70 [2020-10-26 03:27:50,562 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 03:27:50,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 03:27:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 03:27:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-26 03:27:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 03:27:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-26 03:27:50,565 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2020-10-26 03:27:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:50,566 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-26 03:27:50,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 03:27:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-26 03:27:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 03:27:50,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:50,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:50,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:50,779 INFO L429 AbstractCegarLoop]: === Iteration 20 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 736937968, now seen corresponding path program 5 times [2020-10-26 03:27:50,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:50,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432511042] [2020-10-26 03:27:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:51,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432511042] [2020-10-26 03:27:51,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316146472] [2020-10-26 03:27:51,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:51,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-26 03:27:51,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:27:51,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-26 03:27:51,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:51,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:27:51,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:51,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:51,369 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:51,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:27:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:51,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-26 03:27:51,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625471728] [2020-10-26 03:27:51,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 03:27:51,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 03:27:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:27:51,555 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-10-26 03:27:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:52,434 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-10-26 03:27:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:27:52,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-26 03:27:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:52,436 INFO L225 Difference]: With dead ends: 56 [2020-10-26 03:27:52,436 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:27:52,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-26 03:27:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:27:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-26 03:27:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 03:27:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-26 03:27:52,440 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-10-26 03:27:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:52,440 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-26 03:27:52,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 03:27:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-26 03:27:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-26 03:27:52,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:27:52,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:27:52,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:52,648 INFO L429 AbstractCegarLoop]: === Iteration 21 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:27:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:27:52,648 INFO L82 PathProgramCache]: Analyzing trace with hash -873535480, now seen corresponding path program 6 times [2020-10-26 03:27:52,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:27:52,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450314005] [2020-10-26 03:27:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:27:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:27:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:27:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:27:53,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450314005] [2020-10-26 03:27:53,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112607935] [2020-10-26 03:27:53,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:27:53,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-26 03:27:53,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:27:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-26 03:27:53,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:27:53,494 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:27:53,494 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:53,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:53,504 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:53,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:27:53,567 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-26 03:27:53,567 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:27:53,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:53,571 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:53,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-26 03:27:53,761 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:53,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-10-26 03:27:53,763 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:27:53,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:27:53,783 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:27:53,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2020-10-26 03:27:53,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 03:27:53,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 03:27:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-26 03:27:54,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:27:54,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 25 [2020-10-26 03:27:54,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34596085] [2020-10-26 03:27:54,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 03:27:54,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:27:54,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 03:27:54,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-26 03:27:54,144 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 25 states. [2020-10-26 03:27:55,482 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-26 03:27:55,752 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-26 03:27:56,006 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 03:27:56,601 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-26 03:27:56,927 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-26 03:27:57,220 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-26 03:27:57,746 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-26 03:27:57,955 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-26 03:27:58,336 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-26 03:27:58,539 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-26 03:27:58,893 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-26 03:27:59,123 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-26 03:27:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:27:59,127 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-26 03:27:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 03:27:59,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2020-10-26 03:27:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:27:59,128 INFO L225 Difference]: With dead ends: 85 [2020-10-26 03:27:59,128 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:27:59,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=443, Invalid=2863, Unknown=0, NotChecked=0, Total=3306 [2020-10-26 03:27:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:27:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:27:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:27:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:27:59,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-10-26 03:27:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:27:59,132 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:27:59,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 03:27:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:27:59,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:27:59,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-26 03:27:59,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:27:59 BoogieIcfgContainer [2020-10-26 03:27:59,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:27:59,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:27:59,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:27:59,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:27:59,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:27:33" (3/4) ... [2020-10-26 03:27:59,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:27:59,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:27:59,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-26 03:27:59,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrnlen [2020-10-26 03:27:59,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-26 03:27:59,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-26 03:27:59,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-26 03:27:59,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:27:59,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-26 03:27:59,371 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-26 03:27:59,371 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-26 03:27:59,372 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:27:59,372 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:27:59,406 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:27:59,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:27:59,408 INFO L168 Benchmark]: Toolchain (without parser) took 27582.88 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 29.2 MB in the beginning and 81.8 MB in the end (delta: -52.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,408 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:27:59,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.80 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 26.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,409 INFO L168 Benchmark]: Boogie Preprocessor took 63.67 ms. Allocated memory is still 46.1 MB. Free memory was 26.8 MB in the beginning and 24.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,410 INFO L168 Benchmark]: RCFGBuilder took 831.82 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 28.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,410 INFO L168 Benchmark]: TraceAbstraction took 25940.18 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 27.9 MB in the beginning and 85.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,411 INFO L168 Benchmark]: Witness Printer took 59.73 ms. Allocated memory is still 121.6 MB. Free memory was 84.9 MB in the beginning and 81.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:27:59,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 672.80 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 26.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.67 ms. Allocated memory is still 46.1 MB. Free memory was 26.8 MB in the beginning and 24.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 831.82 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 28.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25940.18 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 27.9 MB in the beginning and 85.7 MB in the end (delta: -57.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.1 GB. * Witness Printer took 59.73 ms. Allocated memory is still 121.6 MB. Free memory was 84.9 MB in the beginning and 81.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.8s, OverallIterations: 21, TraceHistogramMax: 5, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 1064 SDslu, 950 SDs, 0 SdLazy, 3810 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 561 GetRequests, 269 SyntacticMatches, 5 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 122 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 758 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 729 ConstructedInterpolants, 11 QuantifiedInterpolants, 168010 SizeOfPredicates, 58 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 124/364 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...