./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 f470102c 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 0.1.25-f470102 [2019-11-28 20:04:50,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:04:50,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:04:50,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:04:50,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:04:50,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:04:50,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:04:50,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:04:50,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:04:50,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:04:50,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:04:50,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:04:50,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:04:50,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:04:50,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:04:50,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:04:50,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:04:50,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:04:50,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:04:50,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:04:50,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:04:50,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:04:50,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:04:50,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:04:50,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:04:50,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:04:50,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:04:50,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:04:50,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:04:50,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:04:50,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:04:50,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:04:50,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:04:50,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:04:50,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:04:50,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:04:50,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:04:50,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:04:50,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:04:50,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:04:50,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:04:50,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:04:50,319 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:04:50,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:04:50,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:04:50,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:04:50,321 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:04:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:04:50,322 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:04:50,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:04:50,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:04:50,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:04:50,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:04:50,323 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:04:50,323 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:04:50,324 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:04:50,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:04:50,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:04:50,325 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:04:50,325 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:04:50,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:04:50,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:04:50,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:04:50,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:04:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:50,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:04:50,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:04:50,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:04:50,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:04:50,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:04:50,328 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 20:04:50,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:04:50,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:04:50,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:04:50,632 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:04:50,632 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:04:50,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-28 20:04:50,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abfd072a6/5e01f49163714d51ae34296062198984/FLAG98bb03c69 [2019-11-28 20:04:51,200 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:04:51,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-28 20:04:51,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abfd072a6/5e01f49163714d51ae34296062198984/FLAG98bb03c69 [2019-11-28 20:04:51,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abfd072a6/5e01f49163714d51ae34296062198984 [2019-11-28 20:04:51,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:04:51,547 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:04:51,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:51,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:04:51,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:04:51,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:51" (1/1) ... [2019-11-28 20:04:51,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4d7e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:51, skipping insertion in model container [2019-11-28 20:04:51,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:51" (1/1) ... [2019-11-28 20:04:51,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:04:51,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:04:51,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:51,982 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:04:52,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:52,114 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:04:52,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52 WrapperNode [2019-11-28 20:04:52,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:52,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:04:52,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:04:52,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:04:52,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (1/1) ... [2019-11-28 20:04:52,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:04:52,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:04:52,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:04:52,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:04:52,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (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 20:04:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:04:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:04:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:04:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:04:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:04:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:04:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:04:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:04:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:04:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:04:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:04:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:04:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:04:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:04:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:04:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:04:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:04:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:04:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:04:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:04:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:04:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:04:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:04:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:04:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:04:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:04:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:04:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:04:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:04:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:04:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:04:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:04:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:04:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:04:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:04:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:04:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:04:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:04:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:04:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:04:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:04:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:04:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:04:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:04:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:04:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:04:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:04:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:04:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:04:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:04:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:04:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:04:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:04:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:04:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:04:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:04:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:04:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:04:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:04:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:04:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:04:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:04:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:04:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:04:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:04:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:04:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:04:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:04:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:04:52,272 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:04:52,272 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:04:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:04:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:04:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:04:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:04:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:04:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:04:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:04:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:04:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:04:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:04:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:04:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:04:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:04:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:04:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:04:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:04:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:04:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:04:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:04:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:04:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:04:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:04:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:04:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:04:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:04:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:04:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:04:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:04:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:04:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:04:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:04:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:04:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:04:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:04:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:04:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:04:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:04:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:04:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:04:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:04:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:04:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:04:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:04:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:52,813 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:52,813 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:04:52,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:52 BoogieIcfgContainer [2019-11-28 20:04:52,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:52,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:52,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:52,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:52,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:04:51" (1/3) ... [2019-11-28 20:04:52,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff4aaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:52, skipping insertion in model container [2019-11-28 20:04:52,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:52" (2/3) ... [2019-11-28 20:04:52,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff4aaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:52, skipping insertion in model container [2019-11-28 20:04:52,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:52" (3/3) ... [2019-11-28 20:04:52,823 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2019-11-28 20:04:52,833 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:52,841 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 20:04:52,854 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 20:04:52,875 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:52,876 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:52,876 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:52,876 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:52,876 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:52,877 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:52,877 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:52,877 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-28 20:04:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:04:52,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:52,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:52,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2019-11-28 20:04:52,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:52,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12882592] [2019-11-28 20:04:52,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:53,013 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:53,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433750209] [2019-11-28 20:04:53,013 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 20:04:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:53,163 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:04:53,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:53,232 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 20:04:53,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12882592] [2019-11-28 20:04:53,233 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:53,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433750209] [2019-11-28 20:04:53,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:53,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:53,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119435874] [2019-11-28 20:04:53,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:04:53,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:53,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:04:53,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:04:53,258 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2019-11-28 20:04:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:53,323 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-28 20:04:53,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:04:53,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 20:04:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:53,335 INFO L225 Difference]: With dead ends: 33 [2019-11-28 20:04:53,335 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 20:04:53,337 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 20:04:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 20:04:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 20:04:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:04:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-28 20:04:53,375 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-11-28 20:04:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:53,376 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-28 20:04:53,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:04:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-28 20:04:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:04:53,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:53,377 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:53,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:53,583 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:53,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2019-11-28 20:04:53,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:53,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354183460] [2019-11-28 20:04:53,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:53,608 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:53,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282070885] [2019-11-28 20:04:53,609 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 20:04:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:53,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:04:53,729 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:53,805 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 20:04:53,806 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 20:04:53,806 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:53,814 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:53,815 INFO L534 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 20:04:53,816 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-28 20:04:53,827 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 20:04:53,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354183460] [2019-11-28 20:04:53,829 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:53,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282070885] [2019-11-28 20:04:53,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:53,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:04:53,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075240048] [2019-11-28 20:04:53,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:04:53,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:53,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:04:53,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:04:53,833 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2019-11-28 20:04:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:53,864 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-28 20:04:53,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:04:53,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-28 20:04:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:53,866 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:04:53,866 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 20:04:53,867 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 20:04:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 20:04:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 20:04:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:04:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-28 20:04:53,875 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-11-28 20:04:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:53,876 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-28 20:04:53,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:04:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-28 20:04:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:04:53,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:53,878 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:54,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:54,083 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2019-11-28 20:04:54,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:54,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921028569] [2019-11-28 20:04:54,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:54,097 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:54,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936339275] [2019-11-28 20:04:54,098 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 20:04:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:54,196 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 20:04:54,198 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:54,249 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 20:04:54,250 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 20:04:54,251 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:54,258 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:54,259 INFO L534 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 20:04:54,260 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2019-11-28 20:04:54,306 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 20:04:54,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921028569] [2019-11-28 20:04:54,306 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:54,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936339275] [2019-11-28 20:04:54,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:54,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:54,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181534835] [2019-11-28 20:04:54,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:04:54,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:54,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:04:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:54,309 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2019-11-28 20:04:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:54,479 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2019-11-28 20:04:54,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:04:54,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-28 20:04:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:54,481 INFO L225 Difference]: With dead ends: 70 [2019-11-28 20:04:54,482 INFO L226 Difference]: Without dead ends: 70 [2019-11-28 20:04:54,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:04:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-28 20:04:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2019-11-28 20:04:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 20:04:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-11-28 20:04:54,491 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2019-11-28 20:04:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:54,492 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-11-28 20:04:54,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:04:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-11-28 20:04:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:04:54,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:54,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:54,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:54,697 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:54,699 INFO L82 PathProgramCache]: Analyzing trace with hash 711562523, now seen corresponding path program 1 times [2019-11-28 20:04:54,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:54,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987196513] [2019-11-28 20:04:54,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:54,718 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:54,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855449533] [2019-11-28 20:04:54,719 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 20:04:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:54,826 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:04:54,828 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:54,852 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-11-28 20:04:54,857 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 20:04:54,860 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 20:04:54,861 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:54,875 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:54,884 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 20:04:54,885 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:54,900 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:54,905 INFO L534 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 20:04:54,905 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2019-11-28 20:04:54,964 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 20:04:54,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987196513] [2019-11-28 20:04:54,964 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:54,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855449533] [2019-11-28 20:04:54,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:54,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:54,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731159656] [2019-11-28 20:04:54,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:54,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:54,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:54,967 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2019-11-28 20:04:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:55,106 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-11-28 20:04:55,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:55,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 20:04:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:55,108 INFO L225 Difference]: With dead ends: 50 [2019-11-28 20:04:55,108 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 20:04:55,108 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 20:04:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 20:04:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2019-11-28 20:04:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 20:04:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-11-28 20:04:55,114 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2019-11-28 20:04:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:55,115 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-11-28 20:04:55,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-11-28 20:04:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:04:55,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:55,116 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:55,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:55,326 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2019-11-28 20:04:55,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:55,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268880690] [2019-11-28 20:04:55,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:55,338 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:55,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466362857] [2019-11-28 20:04:55,339 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 20:04:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:55,459 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:04:55,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:55,493 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 20:04:55,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268880690] [2019-11-28 20:04:55,494 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:55,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466362857] [2019-11-28 20:04:55,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:55,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:55,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121410105] [2019-11-28 20:04:55,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:55,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:55,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:55,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:55,497 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 5 states. [2019-11-28 20:04:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:55,549 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2019-11-28 20:04:55,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:55,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-28 20:04:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:55,551 INFO L225 Difference]: With dead ends: 50 [2019-11-28 20:04:55,552 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 20:04:55,552 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 20:04:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 20:04:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-11-28 20:04:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 20:04:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2019-11-28 20:04:55,557 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2019-11-28 20:04:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:55,558 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2019-11-28 20:04:55,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-11-28 20:04:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:04:55,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:55,559 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:55,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:55,760 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:55,762 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2019-11-28 20:04:55,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:55,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128804142] [2019-11-28 20:04:55,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:55,774 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:55,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146693770] [2019-11-28 20:04:55,774 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 20:04:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:55,864 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:04:55,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:55,880 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_26|]} [2019-11-28 20:04:55,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 20:04:55,886 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 20:04:55,886 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:55,898 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:55,905 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 20:04:55,906 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:55,919 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:55,920 INFO L534 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 20:04:55,920 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2019-11-28 20:04:56,012 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 20:04:56,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128804142] [2019-11-28 20:04:56,013 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:56,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146693770] [2019-11-28 20:04:56,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:04:56,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 20:04:56,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603346267] [2019-11-28 20:04:56,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:04:56,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:04:56,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:56,015 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2019-11-28 20:04:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:56,138 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-11-28 20:04:56,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:04:56,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 20:04:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:56,140 INFO L225 Difference]: With dead ends: 46 [2019-11-28 20:04:56,140 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 20:04:56,141 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 20:04:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 20:04:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-11-28 20:04:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 20:04:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-28 20:04:56,145 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-11-28 20:04:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:56,146 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-28 20:04:56,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:04:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-28 20:04:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:04:56,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:56,147 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 20:04:56,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:56,350 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2019-11-28 20:04:56,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:56,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028371162] [2019-11-28 20:04:56,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:56,360 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:56,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335926596] [2019-11-28 20:04:56,361 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 20:04:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:56,446 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 20:04:56,448 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:56,533 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 20:04:56,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028371162] [2019-11-28 20:04:56,534 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:56,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335926596] [2019-11-28 20:04:56,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:56,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:04:56,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554254477] [2019-11-28 20:04:56,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:04:56,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:56,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:04:56,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:56,536 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2019-11-28 20:04:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:56,613 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-11-28 20:04:56,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:04:56,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-28 20:04:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:56,614 INFO L225 Difference]: With dead ends: 45 [2019-11-28 20:04:56,614 INFO L226 Difference]: Without dead ends: 45 [2019-11-28 20:04:56,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:04:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-28 20:04:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-11-28 20:04:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:04:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-28 20:04:56,618 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2019-11-28 20:04:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:56,619 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-28 20:04:56,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:04:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-28 20:04:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:56,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:56,620 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 20:04:56,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:56,823 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2019-11-28 20:04:56,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:56,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042734174] [2019-11-28 20:04:56,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:56,834 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:56,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969174793] [2019-11-28 20:04:56,835 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 20:04:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:56,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:04:56,920 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:56,940 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 20:04:56,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042734174] [2019-11-28 20:04:56,941 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:56,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969174793] [2019-11-28 20:04:56,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:56,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:56,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169051597] [2019-11-28 20:04:56,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:56,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:56,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:56,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:56,943 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-28 20:04:56,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:56,999 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-11-28 20:04:56,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:56,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 20:04:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:57,000 INFO L225 Difference]: With dead ends: 66 [2019-11-28 20:04:57,000 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 20:04:57,001 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 20:04:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 20:04:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2019-11-28 20:04:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 20:04:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-11-28 20:04:57,006 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 20 [2019-11-28 20:04:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:57,006 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-11-28 20:04:57,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-11-28 20:04:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:57,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:57,008 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 20:04:57,210 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:57,211 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2019-11-28 20:04:57,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:57,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302974437] [2019-11-28 20:04:57,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:57,221 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:57,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24184903] [2019-11-28 20:04:57,221 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 20:04:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:57,311 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:04:57,314 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:57,328 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-28 20:04:57,328 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 20:04:57,329 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:57,332 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:57,332 INFO L534 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 20:04:57,332 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-28 20:04:57,342 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 20:04:57,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302974437] [2019-11-28 20:04:57,342 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:57,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24184903] [2019-11-28 20:04:57,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:57,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:04:57,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307615131] [2019-11-28 20:04:57,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:04:57,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:57,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:04:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:04:57,345 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 3 states. [2019-11-28 20:04:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:57,357 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-11-28 20:04:57,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:04:57,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-28 20:04:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:57,359 INFO L225 Difference]: With dead ends: 44 [2019-11-28 20:04:57,359 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 20:04:57,359 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 20:04:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 20:04:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-28 20:04:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 20:04:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-11-28 20:04:57,364 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2019-11-28 20:04:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:57,364 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-11-28 20:04:57,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:04:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-11-28 20:04:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:57,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:57,365 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 20:04:57,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:57,568 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2019-11-28 20:04:57,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:57,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71565438] [2019-11-28 20:04:57,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:57,578 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:57,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818021178] [2019-11-28 20:04:57,579 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 20:04:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:57,664 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:04:57,668 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:57,687 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:57,687 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 20:04:57,688 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:57,711 INFO L614 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-28 20:04:57,711 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:04:57,713 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2019-11-28 20:04:57,748 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 20:04:57,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71565438] [2019-11-28 20:04:57,748 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:57,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818021178] [2019-11-28 20:04:57,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:57,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:57,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865968522] [2019-11-28 20:04:57,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:57,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:57,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:57,750 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-11-28 20:04:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:57,813 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-28 20:04:57,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:57,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 20:04:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:57,814 INFO L225 Difference]: With dead ends: 43 [2019-11-28 20:04:57,814 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 20:04:57,815 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 20:04:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 20:04:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-28 20:04:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 20:04:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-11-28 20:04:57,820 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2019-11-28 20:04:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:57,820 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-11-28 20:04:57,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-11-28 20:04:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:57,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:57,821 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 20:04:58,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:58,024 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1652540147, now seen corresponding path program 1 times [2019-11-28 20:04:58,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:58,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909035704] [2019-11-28 20:04:58,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:58,034 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:58,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456686723] [2019-11-28 20:04:58,035 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 20:04:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:58,118 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:04:58,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:58,143 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 20:04:58,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909035704] [2019-11-28 20:04:58,143 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:58,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456686723] [2019-11-28 20:04:58,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:58,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:58,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233161386] [2019-11-28 20:04:58,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:58,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:58,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:58,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:58,145 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2019-11-28 20:04:58,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:58,200 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-11-28 20:04:58,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:58,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 20:04:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:58,201 INFO L225 Difference]: With dead ends: 57 [2019-11-28 20:04:58,201 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 20:04:58,202 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 20:04:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 20:04:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2019-11-28 20:04:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:04:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-28 20:04:58,205 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2019-11-28 20:04:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:58,205 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-28 20:04:58,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-28 20:04:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:58,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:58,210 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 20:04:58,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:58,411 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:58,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1373144461, now seen corresponding path program 1 times [2019-11-28 20:04:58,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:58,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56312665] [2019-11-28 20:04:58,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:58,422 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:58,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852617666] [2019-11-28 20:04:58,425 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 20:04:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:58,509 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:04:58,510 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:58,531 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 20:04:58,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56312665] [2019-11-28 20:04:58,532 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:58,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852617666] [2019-11-28 20:04:58,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:58,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:58,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108841802] [2019-11-28 20:04:58,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:58,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:58,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:58,533 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-28 20:04:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:58,583 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2019-11-28 20:04:58,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:58,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 20:04:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:58,584 INFO L225 Difference]: With dead ends: 66 [2019-11-28 20:04:58,584 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 20:04:58,585 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 20:04:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 20:04:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2019-11-28 20:04:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 20:04:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-28 20:04:58,595 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2019-11-28 20:04:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:58,596 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-28 20:04:58,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-28 20:04:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:04:58,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:58,600 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 20:04:58,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:58,807 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:04:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1631309899, now seen corresponding path program 1 times [2019-11-28 20:04:58,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:58,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334132162] [2019-11-28 20:04:58,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:58,816 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:04:58,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800728260] [2019-11-28 20:04:58,817 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 20:04:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:58,903 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:04:58,904 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:58,950 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 20:04:58,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334132162] [2019-11-28 20:04:58,951 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 20:04:58,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800728260] [2019-11-28 20:04:58,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:58,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:58,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189334602] [2019-11-28 20:04:58,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:58,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:58,952 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-28 20:04:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:58,984 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-28 20:04:58,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:58,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-28 20:04:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:58,985 INFO L225 Difference]: With dead ends: 42 [2019-11-28 20:04:58,985 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:04:58,985 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 20:04:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:04:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:04:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:04:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:04:58,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-28 20:04:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:58,987 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:04:58,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:04:58,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:04:59,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:59,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:04:59 BoogieIcfgContainer [2019-11-28 20:04:59,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:04:59,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:04:59,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:04:59,194 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:04:59,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:52" (3/4) ... [2019-11-28 20:04:59,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:04:59,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 20:04:59,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 20:04:59,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 20:04:59,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 20:04:59,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 20:04:59,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 20:04:59,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 20:04:59,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 20:04:59,216 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 20:04:59,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:04:59,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:04:59,264 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:04:59,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:04:59,269 INFO L168 Benchmark]: Toolchain (without parser) took 7722.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.5 MB). Free memory was 956.3 MB in the beginning and 846.8 MB in the end (delta: 109.6 MB). Peak memory consumption was 326.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:59,269 INFO L168 Benchmark]: CDTParser took 0.26 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 20:04:59,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:59,272 INFO L168 Benchmark]: Boogie Preprocessor took 75.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:59,273 INFO L168 Benchmark]: RCFGBuilder took 623.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:59,273 INFO L168 Benchmark]: TraceAbstraction took 6376.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 846.8 MB in the end (delta: 229.8 MB). Peak memory consumption was 300.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:59,274 INFO L168 Benchmark]: Witness Printer took 71.34 ms. Allocated memory is still 1.2 GB. Free memory was 846.8 MB in the beginning and 846.8 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 20:04:59,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 568.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 623.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6376.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 846.8 MB in the end (delta: 229.8 MB). Peak memory consumption was 300.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.34 ms. Allocated memory is still 1.2 GB. Free memory was 846.8 MB in the beginning and 846.8 MB in the end (delta: 24 B). Peak memory consumption was 24 B. 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: 6.3s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 271 SDtfs, 461 SDslu, 351 SDs, 0 SdLazy, 411 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s 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: 0.0s 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...