./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 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/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 0.2.1-dev-20ed64e [2021-08-27 04:49:24,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:49:24,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:49:24,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:49:24,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:49:24,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:49:24,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:49:24,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:49:24,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:49:24,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:49:24,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:49:24,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:49:24,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:49:24,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:49:24,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:49:24,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:49:24,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:49:24,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:49:24,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:49:24,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:49:24,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:49:24,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:49:24,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:49:24,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:49:24,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:49:24,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:49:24,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:49:24,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:49:24,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:49:24,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:49:24,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:49:24,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:49:24,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:49:24,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:49:24,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:49:24,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:49:24,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:49:24,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:49:24,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:49:24,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:49:24,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:49:24,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 04:49:24,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:49:24,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:49:24,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:49:24,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:49:24,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:49:24,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:49:24,238 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:49:24,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:49:24,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:49:24,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:49:24,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:49:24,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:49:24,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:49:24,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:49:24,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:49:24,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:49:24,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:49:24,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:49:24,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:49:24,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:49:24,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:49:24,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:49:24,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:49:24,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:49:24,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9551eac17e9ca0a42612f73eb01545dde991582 [2021-08-27 04:49:24,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:49:24,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:49:24,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:49:24,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:49:24,501 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:49:24,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-08-27 04:49:24,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e8f8b78/3c2486a20a7f46a8a3475102f2fa4aa5/FLAG444f9e73f [2021-08-27 04:49:24,921 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:49:24,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-08-27 04:49:24,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e8f8b78/3c2486a20a7f46a8a3475102f2fa4aa5/FLAG444f9e73f [2021-08-27 04:49:24,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e8f8b78/3c2486a20a7f46a8a3475102f2fa4aa5 [2021-08-27 04:49:24,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:49:24,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:49:24,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:49:24,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:49:24,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:49:24,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:24" (1/1) ... [2021-08-27 04:49:24,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad9fdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:24, skipping insertion in model container [2021-08-27 04:49:24,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:24" (1/1) ... [2021-08-27 04:49:24,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:49:24,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:49:25,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:49:25,167 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:49:25,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:49:25,215 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:49:25,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25 WrapperNode [2021-08-27 04:49:25,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:49:25,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:49:25,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:49:25,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:49:25,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:49:25,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:49:25,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:49:25,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:49:25,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (1/1) ... [2021-08-27 04:49:25,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:49:25,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:25,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:49:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:49:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:49:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:49:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:49:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:49:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:49:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:49:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:49:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:49:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:49:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:49:25,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:49:25,714 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-27 04:49:25,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:25 BoogieIcfgContainer [2021-08-27 04:49:25,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:49:25,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:49:25,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:49:25,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:49:25,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:49:24" (1/3) ... [2021-08-27 04:49:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4308aae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:25, skipping insertion in model container [2021-08-27 04:49:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:25" (2/3) ... [2021-08-27 04:49:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4308aae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:25, skipping insertion in model container [2021-08-27 04:49:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:25" (3/3) ... [2021-08-27 04:49:25,726 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-08-27 04:49:25,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:49:25,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-27 04:49:25,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:49:25,787 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:49:25,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-27 04:49:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:49:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:49:25,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:25,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:25,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-08-27 04:49:25,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:25,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615976091] [2021-08-27 04:49:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:25,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:25,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:25,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030300205] [2021-08-27 04:49:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:25,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:25,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:25,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:25,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 04:49:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:26,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 04:49:26,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:26,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:26,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615976091] [2021-08-27 04:49:26,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:26,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030300205] [2021-08-27 04:49:26,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030300205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:26,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:26,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:49:26,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863522666] [2021-08-27 04:49:26,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:49:26,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:49:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:49:26,168 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:26,206 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-08-27 04:49:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:49:26,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 04:49:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:26,213 INFO L225 Difference]: With dead ends: 33 [2021-08-27 04:49:26,213 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 04:49:26,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 04:49:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-27 04:49:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-08-27 04:49:26,237 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-08-27 04:49:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:26,238 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-08-27 04:49:26,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-08-27 04:49:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:49:26,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:26,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:26,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-27 04:49:26,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:26,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-08-27 04:49:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:26,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946023985] [2021-08-27 04:49:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:26,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:26,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:26,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549292790] [2021-08-27 04:49:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:26,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:26,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:26,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 04:49:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:49:26,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:26,669 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 04:49:26,670 INFO L388 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 [2021-08-27 04:49:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:26,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:26,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946023985] [2021-08-27 04:49:26,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:26,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549292790] [2021-08-27 04:49:26,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549292790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:26,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:26,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:49:26,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423793058] [2021-08-27 04:49:26,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:49:26,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:49:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:49:26,699 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:26,722 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-27 04:49:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:49:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 04:49:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:26,724 INFO L225 Difference]: With dead ends: 28 [2021-08-27 04:49:26,724 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 04:49:26,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:49:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 04:49:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-27 04:49:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-08-27 04:49:26,729 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-08-27 04:49:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:26,729 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-08-27 04:49:26,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-08-27 04:49:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:49:26,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:26,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:26,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:26,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-27 04:49:26,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-08-27 04:49:26,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:26,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997615363] [2021-08-27 04:49:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:26,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:26,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:26,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554276085] [2021-08-27 04:49:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:26,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:26,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:26,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 04:49:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:27,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:49:27,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:27,123 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-08-27 04:49:27,124 INFO L388 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 27 treesize of output 28 [2021-08-27 04:49:27,136 INFO L388 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 37 treesize of output 35 [2021-08-27 04:49:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:27,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:27,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997615363] [2021-08-27 04:49:27,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:27,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554276085] [2021-08-27 04:49:27,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554276085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:27,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:27,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:49:27,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082166131] [2021-08-27 04:49:27,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:49:27,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:49:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:27,272 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:27,367 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-08-27 04:49:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:49:27,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 04:49:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:27,368 INFO L225 Difference]: With dead ends: 32 [2021-08-27 04:49:27,368 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 04:49:27,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:49:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 04:49:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-08-27 04:49:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-08-27 04:49:27,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-08-27 04:49:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:27,371 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-08-27 04:49:27,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-08-27 04:49:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:49:27,372 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:27,372 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:27,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:27,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:27,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2021-08-27 04:49:27,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:27,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004810023] [2021-08-27 04:49:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:27,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:27,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:27,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756001517] [2021-08-27 04:49:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:27,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:27,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 04:49:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:49:27,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:27,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:27,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004810023] [2021-08-27 04:49:27,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:27,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756001517] [2021-08-27 04:49:27,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756001517] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:27,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:27,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:49:27,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864157484] [2021-08-27 04:49:27,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:49:27,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:49:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:27,788 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:27,862 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-08-27 04:49:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:49:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 04:49:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:27,863 INFO L225 Difference]: With dead ends: 51 [2021-08-27 04:49:27,864 INFO L226 Difference]: Without dead ends: 51 [2021-08-27 04:49:27,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-27 04:49:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-08-27 04:49:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-08-27 04:49:27,867 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2021-08-27 04:49:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:27,867 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-08-27 04:49:27,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-08-27 04:49:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:49:27,867 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:27,867 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:27,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:28,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:28,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2021-08-27 04:49:28,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:28,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738274591] [2021-08-27 04:49:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:28,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:28,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:28,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922548814] [2021-08-27 04:49:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:28,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:28,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:28,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 04:49:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:28,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:49:28,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:28,244 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-08-27 04:49:28,244 INFO L388 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 24 treesize of output 25 [2021-08-27 04:49:28,248 INFO L388 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 26 treesize of output 24 [2021-08-27 04:49:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:28,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:28,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738274591] [2021-08-27 04:49:28,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:28,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922548814] [2021-08-27 04:49:28,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922548814] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:28,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 04:49:28,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-27 04:49:28,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680217261] [2021-08-27 04:49:28,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:49:28,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:49:28,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:49:28,518 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:28,914 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-08-27 04:49:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:49:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 04:49:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:28,915 INFO L225 Difference]: With dead ends: 40 [2021-08-27 04:49:28,915 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 04:49:28,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 199.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:49:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 04:49:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-08-27 04:49:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-27 04:49:28,918 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2021-08-27 04:49:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:28,919 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-27 04:49:28,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-27 04:49:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:49:28,919 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:28,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:28,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:29,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:29,124 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2021-08-27 04:49:29,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:29,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338055107] [2021-08-27 04:49:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:29,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:29,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:29,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734535615] [2021-08-27 04:49:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:29,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:29,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:29,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:29,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 04:49:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:29,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 04:49:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:29,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:29,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338055107] [2021-08-27 04:49:29,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:29,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734535615] [2021-08-27 04:49:29,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734535615] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:29,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:29,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:49:29,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955301214] [2021-08-27 04:49:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:49:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:49:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:49:29,409 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:29,453 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-08-27 04:49:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:49:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-27 04:49:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:29,455 INFO L225 Difference]: With dead ends: 48 [2021-08-27 04:49:29,455 INFO L226 Difference]: Without dead ends: 48 [2021-08-27 04:49:29,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:49:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-27 04:49:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-08-27 04:49:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 39 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-08-27 04:49:29,459 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2021-08-27 04:49:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:29,459 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-08-27 04:49:29,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-08-27 04:49:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:49:29,460 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:29,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:29,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:29,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:29,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2021-08-27 04:49:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:29,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262348372] [2021-08-27 04:49:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:29,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:29,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:29,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371444834] [2021-08-27 04:49:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:29,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:29,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:29,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 04:49:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:29,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 04:49:29,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:29,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:29,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262348372] [2021-08-27 04:49:29,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:29,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371444834] [2021-08-27 04:49:29,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371444834] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:29,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:29,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:49:29,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018597458] [2021-08-27 04:49:29,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:49:29,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:49:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:49:29,986 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:30,191 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-08-27 04:49:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:49:30,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-27 04:49:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:30,192 INFO L225 Difference]: With dead ends: 45 [2021-08-27 04:49:30,192 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 04:49:30,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:49:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 04:49:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-08-27 04:49:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-08-27 04:49:30,196 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2021-08-27 04:49:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:30,196 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-08-27 04:49:30,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-08-27 04:49:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:49:30,196 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:30,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:30,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:30,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:30,398 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2021-08-27 04:49:30,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:30,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124038675] [2021-08-27 04:49:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:30,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:30,405 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:30,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415918325] [2021-08-27 04:49:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:30,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:30,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:30,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:30,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 04:49:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 04:49:30,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 04:49:30,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:30,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124038675] [2021-08-27 04:49:30,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:30,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415918325] [2021-08-27 04:49:30,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415918325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:30,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:30,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:49:30,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590970386] [2021-08-27 04:49:30,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:49:30,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:49:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:30,701 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:30,732 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-08-27 04:49:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:49:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:49:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:30,733 INFO L225 Difference]: With dead ends: 35 [2021-08-27 04:49:30,733 INFO L226 Difference]: Without dead ends: 33 [2021-08-27 04:49:30,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-27 04:49:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-27 04:49:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-08-27 04:49:30,740 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2021-08-27 04:49:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:30,741 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-08-27 04:49:30,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-08-27 04:49:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:49:30,742 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:30,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:30,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:30,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-08-27 04:49:30,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2021-08-27 04:49:30,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:30,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834125328] [2021-08-27 04:49:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:30,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:30,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:30,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876648808] [2021-08-27 04:49:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:30,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:30,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:30,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 04:49:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:31,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:49:31,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:31,155 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 04:49:31,156 INFO L388 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 [2021-08-27 04:49:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 04:49:31,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:31,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834125328] [2021-08-27 04:49:31,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:31,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876648808] [2021-08-27 04:49:31,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876648808] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:31,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:31,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 04:49:31,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248643130] [2021-08-27 04:49:31,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:49:31,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:49:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:49:31,192 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:31,198 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-08-27 04:49:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:49:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:49:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:31,199 INFO L225 Difference]: With dead ends: 32 [2021-08-27 04:49:31,199 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 04:49:31,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:49:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 04:49:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-27 04:49:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-08-27 04:49:31,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-08-27 04:49:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:31,202 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-08-27 04:49:31,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-08-27 04:49:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:49:31,202 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:31,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:31,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:31,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:31,412 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-27 04:49:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2021-08-27 04:49:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837868220] [2021-08-27 04:49:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:31,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:31,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 04:49:31,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990805237] [2021-08-27 04:49:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:31,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:31,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:31,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:31,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 04:49:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 04:49:31,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:31,628 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-08-27 04:49:31,628 INFO L388 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 21 [2021-08-27 04:49:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 04:49:31,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:31,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837868220] [2021-08-27 04:49:31,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 04:49:31,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990805237] [2021-08-27 04:49:31,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990805237] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:31,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:31,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:49:31,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183439431] [2021-08-27 04:49:31,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:49:31,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:49:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:31,824 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:31,959 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-08-27 04:49:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:49:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:49:31,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:31,960 INFO L225 Difference]: With dead ends: 31 [2021-08-27 04:49:31,960 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 04:49:31,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:49:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 04:49:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 04:49:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 04:49:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 04:49:31,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-08-27 04:49:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:31,960 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 04:49:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 04:49:31,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 04:49:31,962 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:49:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:49:31,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:32,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-27 04:49:32,167 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:49:32,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:49:32 BoogieIcfgContainer [2021-08-27 04:49:32,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:49:32,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:49:32,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:49:32,168 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:49:32,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:25" (3/4) ... [2021-08-27 04:49:32,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 04:49:32,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 04:49:32,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 04:49:32,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 04:49:32,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 04:49:32,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 04:49:32,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 04:49:32,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 04:49:32,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-27 04:49:32,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-27 04:49:32,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 04:49:32,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 04:49:32,196 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:49:32,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:49:32,196 INFO L168 Benchmark]: Toolchain (without parser) took 7252.27 ms. Allocated memory was 62.9 MB in the beginning and 146.8 MB in the end (delta: 83.9 MB). Free memory was 46.6 MB in the beginning and 62.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 68.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:32,197 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:49:32,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.56 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 41.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:32,197 INFO L168 Benchmark]: Boogie Preprocessor took 29.65 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 38.5 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:49:32,197 INFO L168 Benchmark]: RCFGBuilder took 468.84 ms. Allocated memory is still 62.9 MB. Free memory was 38.5 MB in the beginning and 28.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:32,198 INFO L168 Benchmark]: TraceAbstraction took 6450.25 ms. Allocated memory was 62.9 MB in the beginning and 146.8 MB in the end (delta: 83.9 MB). Free memory was 28.5 MB in the beginning and 65.3 MB in the end (delta: -36.7 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:32,198 INFO L168 Benchmark]: Witness Printer took 27.53 ms. Allocated memory is still 146.8 MB. Free memory was 65.3 MB in the beginning and 62.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:32,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.56 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 41.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.65 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 38.5 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 468.84 ms. Allocated memory is still 62.9 MB. Free memory was 38.5 MB in the beginning and 28.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6450.25 ms. Allocated memory was 62.9 MB in the beginning and 146.8 MB in the end (delta: 83.9 MB). Free memory was 28.5 MB in the beginning and 65.3 MB in the end (delta: -36.7 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. * Witness Printer took 27.53 ms. Allocated memory is still 146.8 MB. Free memory was 65.3 MB in the beginning and 62.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: 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: 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: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6389.5ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 25.9ms, AutomataDifference: 1087.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 195 SDtfs, 274 SDslu, 241 SDs, 0 SdLazy, 300 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 638.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 517.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.9ms SsaConstructionTime, 112.8ms SatisfiabilityAnalysisTime, 1645.0ms InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 1346 SizeOfPredicates, 26 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 79 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 04:49:32,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...