./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/mult_array-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 b9551eac17e9ca0a42612f73eb01545dde991582 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:32:06,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:32:06,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:32:06,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:32:06,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:32:06,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:32:06,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:32:06,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:32:06,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:32:06,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:32:06,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:32:06,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:32:06,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:32:06,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:32:06,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:32:06,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:32:06,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:32:06,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:32:06,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:32:06,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:32:06,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:32:06,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:32:06,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:32:06,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:32:06,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:32:06,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:32:06,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:32:06,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:32:06,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:32:06,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:32:06,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:32:06,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:32:06,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:32:06,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:32:06,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:32:06,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:32:06,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:32:06,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:32:06,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:32:06,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:32:06,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:32:06,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:32:06,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:32:06,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:32:06,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:32:06,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:32:06,323 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:32:06,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:32:06,324 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:32:06,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:32:06,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:32:06,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:32:06,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:32:06,325 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:32:06,325 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:32:06,326 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:32:06,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:32:06,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:32:06,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:32:06,327 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:32:06,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:32:06,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:32:06,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:32:06,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:32:06,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:32:06,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:32:06,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:32:06,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:32:06,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:32:06,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9551eac17e9ca0a42612f73eb01545dde991582 [2019-11-28 02:32:06,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:32:06,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:32:06,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:32:06,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:32:06,659 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:32:06,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-28 02:32:06,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a5d8242/453464f364f04830ba2fc8d6f4b18fc4/FLAG9394f273d [2019-11-28 02:32:07,264 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:32:07,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-28 02:32:07,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a5d8242/453464f364f04830ba2fc8d6f4b18fc4/FLAG9394f273d [2019-11-28 02:32:07,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a5d8242/453464f364f04830ba2fc8d6f4b18fc4 [2019-11-28 02:32:07,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:32:07,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:32:07,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:32:07,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:32:07,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:32:07,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:32:07" (1/1) ... [2019-11-28 02:32:07,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:07, skipping insertion in model container [2019-11-28 02:32:07,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:32:07" (1/1) ... [2019-11-28 02:32:07,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:32:07,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:32:08,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:32:08,136 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:32:08,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:32:08,244 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:32:08,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08 WrapperNode [2019-11-28 02:32:08,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:32:08,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:32:08,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:32:08,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:32:08,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (1/1) ... [2019-11-28 02:32:08,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:32:08,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:32:08,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:32:08,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:32:08,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (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 [2019-11-28 02:32:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:32:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:32:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:32:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:32:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:32:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:32:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:32:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:32:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:32:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:32:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:32:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:32:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:32:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:32:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:32:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:32:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:32:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:32:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:32:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:32:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:32:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:32:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:32:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:32:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:32:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:32:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:32:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:32:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:32:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:32:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:32:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:32:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:32:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:32:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:32:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:32:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:32:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:32:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:32:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:32:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:32:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:32:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:32:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:32:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:32:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:32:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:32:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:32:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:32:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:32:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:32:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:32:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:32:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:32:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:32:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:32:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:32:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:32:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:32:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:32:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:32:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:32:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:32:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:32:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:32:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:32:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:32:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:32:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:32:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:32:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:32:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:32:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:32:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:32:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:32:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:32:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:32:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:32:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:32:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:32:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:32:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:32:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:32:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:32:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:32:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:32:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:32:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:32:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:32:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:32:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:32:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:32:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:32:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:32:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:32:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:32:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:32:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:32:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:32:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:32:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:32:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:32:08,953 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:32:08,954 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:32:08,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:08 BoogieIcfgContainer [2019-11-28 02:32:08,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:32:08,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:32:08,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:32:08,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:32:08,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:32:07" (1/3) ... [2019-11-28 02:32:08,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ece1223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:08, skipping insertion in model container [2019-11-28 02:32:08,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:08" (2/3) ... [2019-11-28 02:32:08,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ece1223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:08, skipping insertion in model container [2019-11-28 02:32:08,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:08" (3/3) ... [2019-11-28 02:32:08,965 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2019-11-28 02:32:08,975 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:32:08,983 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 02:32:08,996 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 02:32:09,015 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:32:09,015 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:32:09,016 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:32:09,016 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:32:09,016 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:32:09,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:32:09,017 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:32:09,017 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:32:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-28 02:32:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:32:09,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:09,047 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:09,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2019-11-28 02:32:09,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:09,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060683055] [2019-11-28 02:32:09,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:09,160 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:09,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298833205] [2019-11-28 02:32:09,161 INFO L94 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 [2019-11-28 02:32:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:09,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:32:09,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:09,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060683055] [2019-11-28 02:32:09,401 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:09,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298833205] [2019-11-28 02:32:09,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:09,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:32:09,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666963876] [2019-11-28 02:32:09,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:32:09,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:09,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:32:09,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:32:09,436 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2019-11-28 02:32:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:09,523 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-28 02:32:09,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:32:09,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 02:32:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:09,539 INFO L225 Difference]: With dead ends: 33 [2019-11-28 02:32:09,539 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 02:32:09,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 02:32:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 02:32:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:32:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-28 02:32:09,590 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-11-28 02:32:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:09,592 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-28 02:32:09,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:32:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-28 02:32:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:32:09,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:09,593 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:09,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:09,803 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2019-11-28 02:32:09,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:09,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548745748] [2019-11-28 02:32:09,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:09,825 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:09,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183428050] [2019-11-28 02:32:09,826 INFO L94 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 [2019-11-28 02:32:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:09,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:32:09,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:10,025 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 02:32:10,026 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-28 02:32:10,027 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:10,035 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:10,037 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:32:10,038 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-28 02:32:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:10,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548745748] [2019-11-28 02:32:10,055 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:10,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183428050] [2019-11-28 02:32:10,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:10,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:32:10,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888033242] [2019-11-28 02:32:10,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:32:10,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:32:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:32:10,060 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2019-11-28 02:32:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:10,095 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-28 02:32:10,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:32:10,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-28 02:32:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:10,097 INFO L225 Difference]: With dead ends: 28 [2019-11-28 02:32:10,097 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 02:32:10,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:32:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 02:32:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 02:32:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:32:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-28 02:32:10,106 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-11-28 02:32:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:10,106 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-28 02:32:10,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:32:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-28 02:32:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:32:10,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:10,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:10,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:10,313 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2019-11-28 02:32:10,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:10,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600276078] [2019-11-28 02:32:10,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:10,349 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:10,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403514224] [2019-11-28 02:32:10,352 INFO L94 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 [2019-11-28 02:32:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:10,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:32:10,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:10,511 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 02:32:10,512 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-28 02:32:10,512 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:10,523 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:10,524 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:32:10,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2019-11-28 02:32:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:10,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600276078] [2019-11-28 02:32:10,565 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:10,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403514224] [2019-11-28 02:32:10,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:10,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:10,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103292727] [2019-11-28 02:32:10,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:32:10,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:32:10,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:32:10,576 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2019-11-28 02:32:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:10,752 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2019-11-28 02:32:10,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:32:10,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-28 02:32:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:10,754 INFO L225 Difference]: With dead ends: 70 [2019-11-28 02:32:10,754 INFO L226 Difference]: Without dead ends: 70 [2019-11-28 02:32:10,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:32:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-28 02:32:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2019-11-28 02:32:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 02:32:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-11-28 02:32:10,764 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2019-11-28 02:32:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:10,764 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-11-28 02:32:10,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:32:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-11-28 02:32:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:32:10,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:10,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:10,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:10,971 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash 711562523, now seen corresponding path program 1 times [2019-11-28 02:32:10,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:10,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643750775] [2019-11-28 02:32:10,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:10,987 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:10,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049475928] [2019-11-28 02:32:10,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:11,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 02:32:11,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:11,103 INFO L404 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-11-28 02:32:11,112 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 02:32:11,115 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-11-28 02:32:11,116 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:11,130 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:11,141 INFO L377 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 10 treesize of output 8 [2019-11-28 02:32:11,142 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:11,155 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:11,160 INFO L508 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 02:32:11,161 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2019-11-28 02:32:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:11,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643750775] [2019-11-28 02:32:11,211 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:11,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049475928] [2019-11-28 02:32:11,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:11,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:32:11,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081731643] [2019-11-28 02:32:11,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:11,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:11,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:11,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:11,214 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2019-11-28 02:32:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:11,363 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-11-28 02:32:11,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:11,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 02:32:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:11,365 INFO L225 Difference]: With dead ends: 50 [2019-11-28 02:32:11,366 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 02:32:11,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:32:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 02:32:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2019-11-28 02:32:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 02:32:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-11-28 02:32:11,372 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2019-11-28 02:32:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:11,372 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-11-28 02:32:11,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-11-28 02:32:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:32:11,373 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:11,373 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:11,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:11,574 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2019-11-28 02:32:11,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:11,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204429599] [2019-11-28 02:32:11,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:11,586 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:11,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291264291] [2019-11-28 02:32:11,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 02:32:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:11,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:32:11,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:11,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204429599] [2019-11-28 02:32:11,710 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:11,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291264291] [2019-11-28 02:32:11,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:11,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:11,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448807420] [2019-11-28 02:32:11,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:11,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:11,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:11,713 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 5 states. [2019-11-28 02:32:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:11,769 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2019-11-28 02:32:11,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:11,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-28 02:32:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:11,771 INFO L225 Difference]: With dead ends: 50 [2019-11-28 02:32:11,771 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 02:32:11,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 02:32:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-11-28 02:32:11,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:32:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2019-11-28 02:32:11,778 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2019-11-28 02:32:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:11,778 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2019-11-28 02:32:11,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-11-28 02:32:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:32:11,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:11,780 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:11,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:11,985 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2019-11-28 02:32:11,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:11,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220566859] [2019-11-28 02:32:11,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:12,001 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:12,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886241148] [2019-11-28 02:32:12,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 02:32:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:12,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 02:32:12,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:12,108 INFO L404 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_26|]} [2019-11-28 02:32:12,119 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 02:32:12,120 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-11-28 02:32:12,121 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:12,130 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:12,136 INFO L377 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 10 treesize of output 8 [2019-11-28 02:32:12,136 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:12,145 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:12,147 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 02:32:12,147 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2019-11-28 02:32:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:12,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220566859] [2019-11-28 02:32:12,252 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:12,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886241148] [2019-11-28 02:32:12,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:32:12,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 02:32:12,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707265736] [2019-11-28 02:32:12,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:32:12,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:12,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:32:12,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:32:12,254 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2019-11-28 02:32:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:12,403 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-11-28 02:32:12,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:32:12,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 02:32:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:12,408 INFO L225 Difference]: With dead ends: 46 [2019-11-28 02:32:12,409 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 02:32:12,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:32:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 02:32:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-11-28 02:32:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:32:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-28 02:32:12,414 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-11-28 02:32:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:12,414 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-28 02:32:12,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:32:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-28 02:32:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:32:12,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:12,415 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:12,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:12,619 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:12,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2019-11-28 02:32:12,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:12,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578648982] [2019-11-28 02:32:12,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:12,630 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:12,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456646153] [2019-11-28 02:32:12,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 02:32:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:12,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:32:12,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:12,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578648982] [2019-11-28 02:32:12,800 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:12,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456646153] [2019-11-28 02:32:12,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:12,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 02:32:12,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303366100] [2019-11-28 02:32:12,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:32:12,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:32:12,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:32:12,802 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2019-11-28 02:32:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:12,881 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-11-28 02:32:12,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:32:12,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-28 02:32:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:12,883 INFO L225 Difference]: With dead ends: 45 [2019-11-28 02:32:12,883 INFO L226 Difference]: Without dead ends: 45 [2019-11-28 02:32:12,884 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:32:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-28 02:32:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-11-28 02:32:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:32:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-28 02:32:12,889 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2019-11-28 02:32:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:12,889 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-28 02:32:12,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:32:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-28 02:32:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:12,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:12,890 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:13,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:13,093 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2019-11-28 02:32:13,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:13,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826582157] [2019-11-28 02:32:13,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:13,104 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:13,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355650974] [2019-11-28 02:32:13,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 02:32:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:13,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:32:13,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:13,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826582157] [2019-11-28 02:32:13,207 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:13,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355650974] [2019-11-28 02:32:13,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:13,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:13,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517660854] [2019-11-28 02:32:13,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:13,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:13,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:13,209 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-28 02:32:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:13,275 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-11-28 02:32:13,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:13,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 02:32:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:13,276 INFO L225 Difference]: With dead ends: 66 [2019-11-28 02:32:13,276 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 02:32:13,277 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 02:32:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2019-11-28 02:32:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:32:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-11-28 02:32:13,282 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 20 [2019-11-28 02:32:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:13,283 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-11-28 02:32:13,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-11-28 02:32:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:13,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:13,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:13,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:13,488 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:13,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2019-11-28 02:32:13,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:13,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129362894] [2019-11-28 02:32:13,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:13,498 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:13,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401644317] [2019-11-28 02:32:13,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:13,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:32:13,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:13,604 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 02:32:13,605 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-28 02:32:13,605 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:13,610 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:13,611 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:32:13,611 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-28 02:32:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:13,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129362894] [2019-11-28 02:32:13,620 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:13,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401644317] [2019-11-28 02:32:13,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:13,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:32:13,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59755126] [2019-11-28 02:32:13,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:32:13,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:32:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:32:13,622 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 3 states. [2019-11-28 02:32:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:13,633 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-11-28 02:32:13,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:32:13,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-28 02:32:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:13,634 INFO L225 Difference]: With dead ends: 44 [2019-11-28 02:32:13,635 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 02:32:13,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:32:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 02:32:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-28 02:32:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 02:32:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-11-28 02:32:13,644 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2019-11-28 02:32:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:13,645 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-11-28 02:32:13,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:32:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-11-28 02:32:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:13,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:13,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:13,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:13,850 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:13,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2019-11-28 02:32:13,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:13,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405545002] [2019-11-28 02:32:13,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:13,864 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:13,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356457887] [2019-11-28 02:32:13,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:13,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:32:13,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:13,993 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:13,994 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 35 [2019-11-28 02:32:13,994 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:14,015 INFO L588 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-28 02:32:14,016 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:14,016 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2019-11-28 02:32:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:14,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405545002] [2019-11-28 02:32:14,048 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:14,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356457887] [2019-11-28 02:32:14,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:14,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:32:14,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836029778] [2019-11-28 02:32:14,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:14,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:14,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:14,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:14,049 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-11-28 02:32:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:14,113 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-28 02:32:14,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:14,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 02:32:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:14,114 INFO L225 Difference]: With dead ends: 43 [2019-11-28 02:32:14,114 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 02:32:14,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:32:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 02:32:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-28 02:32:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:32:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-11-28 02:32:14,120 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2019-11-28 02:32:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:14,121 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-11-28 02:32:14,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-11-28 02:32:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:14,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:14,122 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:14,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:14,325 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1652540147, now seen corresponding path program 1 times [2019-11-28 02:32:14,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:14,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383250361] [2019-11-28 02:32:14,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:14,335 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:14,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776570685] [2019-11-28 02:32:14,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:14,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:32:14,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:14,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383250361] [2019-11-28 02:32:14,461 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:14,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776570685] [2019-11-28 02:32:14,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:14,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:14,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975786371] [2019-11-28 02:32:14,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:14,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:14,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:14,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:14,463 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2019-11-28 02:32:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:14,515 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-11-28 02:32:14,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:14,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 02:32:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:14,517 INFO L225 Difference]: With dead ends: 57 [2019-11-28 02:32:14,517 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 02:32:14,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 02:32:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2019-11-28 02:32:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:32:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-28 02:32:14,521 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2019-11-28 02:32:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:14,524 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-28 02:32:14,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-28 02:32:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:14,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:14,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:14,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:14,729 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1373144461, now seen corresponding path program 1 times [2019-11-28 02:32:14,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:14,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928427959] [2019-11-28 02:32:14,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:14,739 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:14,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444208082] [2019-11-28 02:32:14,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:14,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:32:14,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:14,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928427959] [2019-11-28 02:32:14,858 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:14,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444208082] [2019-11-28 02:32:14,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:14,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:14,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636152073] [2019-11-28 02:32:14,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:14,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:14,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:14,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:14,861 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-28 02:32:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:14,911 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2019-11-28 02:32:14,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:14,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 02:32:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:14,912 INFO L225 Difference]: With dead ends: 66 [2019-11-28 02:32:14,913 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 02:32:14,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 02:32:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2019-11-28 02:32:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:32:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-28 02:32:14,925 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2019-11-28 02:32:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:14,925 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-28 02:32:14,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-28 02:32:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:32:14,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:14,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:15,131 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:15,132 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1631309899, now seen corresponding path program 1 times [2019-11-28 02:32:15,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:15,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620748060] [2019-11-28 02:32:15,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:15,140 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:32:15,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33871394] [2019-11-28 02:32:15,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:15,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:32:15,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:15,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620748060] [2019-11-28 02:32:15,290 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:32:15,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33871394] [2019-11-28 02:32:15,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:15,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:32:15,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456450869] [2019-11-28 02:32:15,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:15,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:15,291 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-28 02:32:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:15,342 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-28 02:32:15,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:32:15,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 02:32:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:15,343 INFO L225 Difference]: With dead ends: 42 [2019-11-28 02:32:15,343 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:32:15,344 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:15,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:32:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:32:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:32:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:32:15,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-28 02:32:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:15,345 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:32:15,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:32:15,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:32:15,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:15,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:32:15 BoogieIcfgContainer [2019-11-28 02:32:15,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:32:15,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:32:15,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:32:15,554 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:32:15,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:08" (3/4) ... [2019-11-28 02:32:15,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:32:15,563 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 02:32:15,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 02:32:15,571 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 02:32:15,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 02:32:15,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 02:32:15,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 02:32:15,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:32:15,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:32:15,616 INFO L168 Benchmark]: Toolchain (without parser) took 8041.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 951.0 MB in the beginning and 834.3 MB in the end (delta: 116.7 MB). Peak memory consumption was 314.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:15,616 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:32:15,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:15,617 INFO L168 Benchmark]: Boogie Preprocessor took 65.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:15,618 INFO L168 Benchmark]: RCFGBuilder took 644.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:15,618 INFO L168 Benchmark]: TraceAbstraction took 6596.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.0 GB in the beginning and 834.3 MB in the end (delta: 206.2 MB). Peak memory consumption was 287.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:15,619 INFO L168 Benchmark]: Witness Printer took 60.33 ms. Allocated memory is still 1.2 GB. Free memory is still 834.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:32:15,621 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 668.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 644.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6596.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.0 GB in the beginning and 834.3 MB in the end (delta: 206.2 MB). Peak memory consumption was 287.5 MB. Max. memory is 11.5 GB. * Witness Printer took 60.33 ms. Allocated memory is still 1.2 GB. Free memory is still 834.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 522]: 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 8 procedures, 48 locations, 7 error locations. Result: SAFE, OverallTime: 6.5s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 271 SDtfs, 461 SDslu, 351 SDs, 0 SdLazy, 411 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 112 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 211 ConstructedInterpolants, 13 QuantifiedInterpolants, 23710 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 10/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...