./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/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 0.1.25-906a4fb [2020-10-19 17:57:10,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:57:10,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:57:10,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:57:10,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:57:10,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:57:10,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:57:10,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:57:10,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:57:10,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:57:10,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:57:10,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:57:10,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:57:10,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:57:10,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:57:10,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:57:10,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:57:10,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:57:10,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:57:10,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:57:10,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:57:10,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:57:10,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:57:10,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:57:10,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:57:10,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:57:10,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:57:10,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:57:10,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:57:10,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:57:10,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:57:10,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:57:10,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:57:10,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:57:10,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:57:10,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:57:10,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:57:10,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:57:10,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:57:10,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:57:10,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:57:10,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:57:10,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:57:10,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:57:10,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:57:10,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:57:10,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:57:10,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:57:10,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:57:10,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:57:10,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:57:10,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:57:10,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:57:10,348 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:57:10,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:57:10,349 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:57:10,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:57:10,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:57:10,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:57:10,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:57:10,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:57:10,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:57:10,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:57:10,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:57:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:10,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:57:10,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:57:10,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:57:10,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:57:10,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:57:10,353 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 [2020-10-19 17:57:10,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:57:10,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:57:10,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:57:10,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:57:10,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:57:10,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-10-19 17:57:10,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74bfcaf3/b127923a77514d8bb5cabbd7be5cec4f/FLAG4599b4177 [2020-10-19 17:57:11,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:57:11,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-10-19 17:57:11,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74bfcaf3/b127923a77514d8bb5cabbd7be5cec4f/FLAG4599b4177 [2020-10-19 17:57:11,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74bfcaf3/b127923a77514d8bb5cabbd7be5cec4f [2020-10-19 17:57:11,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:57:11,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:57:11,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:11,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:57:11,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:57:11,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:11" (1/1) ... [2020-10-19 17:57:11,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778cc7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:11, skipping insertion in model container [2020-10-19 17:57:11,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:11" (1/1) ... [2020-10-19 17:57:11,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:57:11,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:57:12,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:12,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:57:12,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:12,144 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:57:12,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12 WrapperNode [2020-10-19 17:57:12,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:12,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:57:12,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:57:12,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:57:12,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... [2020-10-19 17:57:12,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:57:12,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:57:12,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:57:12,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:57:12,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:57:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:57:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:57:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:57:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:57:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:57:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:57:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:57:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:57:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:57:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:57:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:57:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:57:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:57:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:57:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:57:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:57:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:57:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:57:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:57:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:57:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:57:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:57:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:57:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:57:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:57:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:57:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:57:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:57:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:57:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:57:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:57:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:57:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:57:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:57:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:57:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:57:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:57:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:57:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:57:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:57:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:57:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:57:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:57:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:57:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:57:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:57:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:57:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:57:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:57:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:57:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:57:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:57:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:57:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:57:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:57:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:57:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:57:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:57:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:57:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:57:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:57:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:57:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:57:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:57:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:57:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:57:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:57:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:57:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:57:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:57:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:57:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:57:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:57:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:57:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:57:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:57:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:57:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:57:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:57:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:57:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:57:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:57:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:57:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:57:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:57:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:57:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:57:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:57:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:57:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:57:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:57:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:57:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:57:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:57:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:57:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:57:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:57:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:57:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:57:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:57:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:57:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:57:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:57:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:57:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:57:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:57:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:57:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:57:12,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:57:12,824 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 17:57:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:12 BoogieIcfgContainer [2020-10-19 17:57:12,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:57:12,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:57:12,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:57:12,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:57:12,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:57:11" (1/3) ... [2020-10-19 17:57:12,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6214e272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:12, skipping insertion in model container [2020-10-19 17:57:12,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:12" (2/3) ... [2020-10-19 17:57:12,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6214e272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:12, skipping insertion in model container [2020-10-19 17:57:12,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:12" (3/3) ... [2020-10-19 17:57:12,837 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2020-10-19 17:57:12,851 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:57:12,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-19 17:57:12,877 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-19 17:57:12,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:57:12,901 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:57:12,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:57:12,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:57:12,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:57:12,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:57:12,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:57:12,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:57:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-19 17:57:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 17:57:12,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:12,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:12,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:12,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:12,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2020-10-19 17:57:12,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:12,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589938470] [2020-10-19 17:57:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:13,061 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:13,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997736239] [2020-10-19 17:57:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:13,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 17:57:13,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:13,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589938470] [2020-10-19 17:57:13,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:13,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997736239] [2020-10-19 17:57:13,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:13,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:13,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096856635] [2020-10-19 17:57:13,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:57:13,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:57:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:57:13,349 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-19 17:57:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:13,425 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-19 17:57:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:57:13,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 17:57:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:13,438 INFO L225 Difference]: With dead ends: 33 [2020-10-19 17:57:13,438 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 17:57:13,440 INFO L677 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 [2020-10-19 17:57:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 17:57:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-19 17:57:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 17:57:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-19 17:57:13,482 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-10-19 17:57:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:13,483 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-19 17:57:13,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:57:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-19 17:57:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:13,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:13,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:13,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-19 17:57:13,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2020-10-19 17:57:13,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:13,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992366978] [2020-10-19 17:57:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:13,724 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:13,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241738852] [2020-10-19 17:57:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:13,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:57:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:13,902 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-19 17:57:13,903 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-19 17:57:13,903 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:13,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:13,913 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:13,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-19 17:57:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:13,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992366978] [2020-10-19 17:57:13,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:13,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241738852] [2020-10-19 17:57:13,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:13,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 17:57:13,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410628522] [2020-10-19 17:57:13,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:57:13,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:57:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:57:13,936 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-10-19 17:57:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:13,973 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-19 17:57:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:57:13,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-19 17:57:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:13,975 INFO L225 Difference]: With dead ends: 28 [2020-10-19 17:57:13,975 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 17:57:13,977 INFO L677 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 [2020-10-19 17:57:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 17:57:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-19 17:57:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 17:57:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-19 17:57:13,983 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-10-19 17:57:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:13,983 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-19 17:57:13,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:57:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-19 17:57:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:13,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:13,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:14,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:14,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:14,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2020-10-19 17:57:14,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:14,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910381285] [2020-10-19 17:57:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:14,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:14,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134420754] [2020-10-19 17:57:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:14,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 17:57:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:14,371 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2020-10-19 17:57:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:57:14,379 INFO L384 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 [2020-10-19 17:57:14,379 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:14,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:14,402 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-10-19 17:57:14,404 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:14,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:14,442 INFO L545 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. [2020-10-19 17:57:14,443 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2020-10-19 17:57:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:14,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910381285] [2020-10-19 17:57:14,570 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:14,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134420754] [2020-10-19 17:57:14,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:14,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:14,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657240003] [2020-10-19 17:57:14,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:14,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:14,574 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-10-19 17:57:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:14,987 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-10-19 17:57:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:14,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 17:57:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:14,989 INFO L225 Difference]: With dead ends: 32 [2020-10-19 17:57:14,990 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 17:57:14,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 17:57:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-19 17:57:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 17:57:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-19 17:57:14,997 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-10-19 17:57:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:14,998 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-19 17:57:14,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-19 17:57:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:57:15,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:15,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:15,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:15,214 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:15,214 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2020-10-19 17:57:15,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:15,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359052793] [2020-10-19 17:57:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:15,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:15,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924816973] [2020-10-19 17:57:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:57:15,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:15,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359052793] [2020-10-19 17:57:15,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:15,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924816973] [2020-10-19 17:57:15,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:15,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:15,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712265745] [2020-10-19 17:57:15,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:15,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:15,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:15,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:15,427 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-10-19 17:57:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:15,575 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-19 17:57:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:15,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-19 17:57:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:15,577 INFO L225 Difference]: With dead ends: 51 [2020-10-19 17:57:15,577 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 17:57:15,577 INFO L677 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 [2020-10-19 17:57:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 17:57:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2020-10-19 17:57:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 17:57:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-19 17:57:15,583 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2020-10-19 17:57:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:15,584 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-19 17:57:15,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-19 17:57:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:57:15,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:15,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:15,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:15,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2020-10-19 17:57:15,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:15,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110870482] [2020-10-19 17:57:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:15,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:15,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487092442] [2020-10-19 17:57:15,813 INFO L95 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 [2020-10-19 17:57:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 17:57:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:15,907 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-10-19 17:57:15,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:57:15,913 INFO L384 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 [2020-10-19 17:57:15,914 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:15,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:15,938 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-10-19 17:57:15,942 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:15,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:15,964 INFO L545 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. [2020-10-19 17:57:15,965 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2020-10-19 17:57:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:16,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110870482] [2020-10-19 17:57:16,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:16,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487092442] [2020-10-19 17:57:16,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:57:16,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-19 17:57:16,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090940990] [2020-10-19 17:57:16,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:16,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:16,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:16,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:16,158 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-19 17:57:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:16,294 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-19 17:57:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:16,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 17:57:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:16,297 INFO L225 Difference]: With dead ends: 40 [2020-10-19 17:57:16,297 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 17:57:16,297 INFO L677 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 [2020-10-19 17:57:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 17:57:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-19 17:57:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 17:57:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-19 17:57:16,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2020-10-19 17:57:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:16,304 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-19 17:57:16,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-19 17:57:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 17:57:16,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:16,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:16,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:16,507 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:16,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2020-10-19 17:57:16,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:16,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687537275] [2020-10-19 17:57:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:16,519 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:16,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821548474] [2020-10-19 17:57:16,519 INFO L95 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 [2020-10-19 17:57:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 17:57:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:16,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687537275] [2020-10-19 17:57:16,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:16,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821548474] [2020-10-19 17:57:16,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:16,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:16,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558717617] [2020-10-19 17:57:16,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:16,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:16,705 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-10-19 17:57:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:16,799 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-19 17:57:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:16,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 17:57:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:16,805 INFO L225 Difference]: With dead ends: 48 [2020-10-19 17:57:16,805 INFO L226 Difference]: Without dead ends: 48 [2020-10-19 17:57:16,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-19 17:57:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-10-19 17:57:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 17:57:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-19 17:57:16,818 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2020-10-19 17:57:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:16,819 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-19 17:57:16,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-19 17:57:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 17:57:16,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:16,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:17,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:17,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2020-10-19 17:57:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:17,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807096096] [2020-10-19 17:57:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:17,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:17,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320442339] [2020-10-19 17:57:17,047 INFO L95 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 [2020-10-19 17:57:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:17,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 17:57:17,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:17,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807096096] [2020-10-19 17:57:17,291 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:17,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320442339] [2020-10-19 17:57:17,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:17,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:57:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118195821] [2020-10-19 17:57:17,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:17,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:17,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:17,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:17,293 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2020-10-19 17:57:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:17,518 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-19 17:57:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 17:57:17,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-19 17:57:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:17,521 INFO L225 Difference]: With dead ends: 45 [2020-10-19 17:57:17,521 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 17:57:17,521 INFO L677 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 [2020-10-19 17:57:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 17:57:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-19 17:57:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:57:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-19 17:57:17,526 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2020-10-19 17:57:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:17,527 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-19 17:57:17,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-19 17:57:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:17,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:17,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:17,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:17,731 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:17,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2020-10-19 17:57:17,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:17,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708386785] [2020-10-19 17:57:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:17,742 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:17,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615391802] [2020-10-19 17:57:17,742 INFO L95 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 [2020-10-19 17:57:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 17:57:17,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:17,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708386785] [2020-10-19 17:57:17,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:17,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615391802] [2020-10-19 17:57:17,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:17,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:17,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094927713] [2020-10-19 17:57:17,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:17,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:17,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:17,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:17,880 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-19 17:57:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:17,913 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-19 17:57:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:17,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 17:57:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:17,915 INFO L225 Difference]: With dead ends: 35 [2020-10-19 17:57:17,915 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 17:57:17,916 INFO L677 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 [2020-10-19 17:57:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 17:57:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-19 17:57:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 17:57:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-19 17:57:17,920 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-10-19 17:57:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:17,920 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-19 17:57:17,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-19 17:57:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:17,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:17,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:18,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-19 17:57:18,133 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2020-10-19 17:57:18,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:18,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064350842] [2020-10-19 17:57:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:18,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:18,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220921742] [2020-10-19 17:57:18,147 INFO L95 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 [2020-10-19 17:57:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:18,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:57:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:18,265 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-19 17:57:18,265 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-19 17:57:18,266 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:18,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:18,271 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:18,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-19 17:57:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:18,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064350842] [2020-10-19 17:57:18,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:18,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220921742] [2020-10-19 17:57:18,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:18,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 17:57:18,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700141178] [2020-10-19 17:57:18,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:57:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:57:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:57:18,284 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2020-10-19 17:57:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:18,298 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-19 17:57:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:57:18,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 17:57:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:18,301 INFO L225 Difference]: With dead ends: 32 [2020-10-19 17:57:18,301 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 17:57:18,301 INFO L677 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 [2020-10-19 17:57:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 17:57:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-19 17:57:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 17:57:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-19 17:57:18,305 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-19 17:57:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:18,306 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-19 17:57:18,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:57:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-19 17:57:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:18,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:18,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:18,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:18,510 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:57:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:18,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2020-10-19 17:57:18,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:18,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315179247] [2020-10-19 17:57:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:18,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 17:57:18,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639259193] [2020-10-19 17:57:18,524 INFO L95 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 [2020-10-19 17:57:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:18,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:57:18,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:18,638 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:18,639 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 35 [2020-10-19 17:57:18,639 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:18,666 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-10-19 17:57:18,669 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:18,670 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2020-10-19 17:57:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:18,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315179247] [2020-10-19 17:57:18,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 17:57:18,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639259193] [2020-10-19 17:57:18,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:18,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:18,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254530176] [2020-10-19 17:57:18,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:18,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:18,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:18,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:18,752 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-19 17:57:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:18,835 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-19 17:57:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:18,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 17:57:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:18,837 INFO L225 Difference]: With dead ends: 31 [2020-10-19 17:57:18,837 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 17:57:18,838 INFO L677 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 [2020-10-19 17:57:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 17:57:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 17:57:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 17:57:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 17:57:18,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-19 17:57:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:18,839 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 17:57:18,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 17:57:18,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 17:57:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:19,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:57:19 BoogieIcfgContainer [2020-10-19 17:57:19,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:57:19,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:57:19,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:57:19,048 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:57:19,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:12" (3/4) ... [2020-10-19 17:57:19,052 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 17:57:19,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 17:57:19,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 17:57:19,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 17:57:19,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 17:57:19,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 17:57:19,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 17:57:19,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 17:57:19,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-19 17:57:19,069 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 17:57:19,069 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 17:57:19,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:57:19,139 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:57:19,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:57:19,141 INFO L168 Benchmark]: Toolchain (without parser) took 7560.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 954.6 MB in the beginning and 948.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 220.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,142 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:57:19,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,143 INFO L168 Benchmark]: Boogie Preprocessor took 62.29 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,143 INFO L168 Benchmark]: RCFGBuilder took 618.67 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,144 INFO L168 Benchmark]: TraceAbstraction took 6219.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 955.3 MB in the end (delta: 110.4 MB). Peak memory consumption was 183.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,144 INFO L168 Benchmark]: Witness Printer took 92.01 ms. Allocated memory is still 1.2 GB. Free memory was 955.3 MB in the beginning and 948.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:19,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 552.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 62.29 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 618.67 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6219.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 955.3 MB in the end (delta: 110.4 MB). Peak memory consumption was 183.3 MB. Max. memory is 11.5 GB. * Witness Printer took 92.01 ms. Allocated memory is still 1.2 GB. Free memory was 955.3 MB in the beginning and 948.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 195 SDtfs, 260 SDslu, 246 SDs, 0 SdLazy, 304 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, 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, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 21586 SizeOfPredicates, 33 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...