./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.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 822411a57a10ce043cb0121fce52bdc7e9506783 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:50:04,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:50:04,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:50:04,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:50:04,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:50:04,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:50:04,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:50:04,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:50:04,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:50:04,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:50:04,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:50:04,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:50:04,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:50:04,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:50:04,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:50:04,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:50:04,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:50:04,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:50:04,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:50:04,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:50:04,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:50:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:50:04,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:50:04,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:50:04,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:50:04,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:50:04,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:50:04,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:50:04,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:50:04,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:50:04,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:50:04,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:50:04,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:50:04,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:50:04,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:50:04,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:50:04,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:50:04,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:50:04,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:50:04,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:50:04,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:50:04,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:50:04,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:50:04,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:50:04,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:50:04,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:50:04,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:50:04,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:50:04,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:50:04,236 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:50:04,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:50:04,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:50:04,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:50:04,237 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:50:04,238 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:50:04,238 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:50:04,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:50:04,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:50:04,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:50:04,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:50:04,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:50:04,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:50:04,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:50:04,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:50:04,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:04,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:50:04,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:50:04,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:50:04,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:50:04,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:50:04,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2020-10-20 05:50:04,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:50:04,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:50:04,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:50:04,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:50:04,488 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:50:04,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-20 05:50:04,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2eac7227/5380b622322d48b09ef720bc4c2fff01/FLAG4d055e483 [2020-10-20 05:50:05,091 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:50:05,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-20 05:50:05,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2eac7227/5380b622322d48b09ef720bc4c2fff01/FLAG4d055e483 [2020-10-20 05:50:05,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2eac7227/5380b622322d48b09ef720bc4c2fff01 [2020-10-20 05:50:05,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:50:05,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:50:05,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:05,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:50:05,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:50:05,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:05" (1/1) ... [2020-10-20 05:50:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ee5ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:05, skipping insertion in model container [2020-10-20 05:50:05,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:05" (1/1) ... [2020-10-20 05:50:05,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:50:05,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:50:05,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:05,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:50:05,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:06,050 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:50:06,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06 WrapperNode [2020-10-20 05:50:06,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:06,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:50:06,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:50:06,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:50:06,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:50:06,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:50:06,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:50:06,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:50:06,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:06,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:50:06,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:50:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:50:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:50:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:50:06,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:50:06,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:50:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2020-10-20 05:50:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:50:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:50:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:50:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:50:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:50:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:50:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:50:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:50:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:50:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:50:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:50:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:50:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:50:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:50:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:50:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:50:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:50:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:50:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:50:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:50:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:50:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:50:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:50:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:50:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:50:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:50:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:50:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:50:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:50:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:50:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:50:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:50:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:50:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:50:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:50:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:50:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:50:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:50:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:50:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:50:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:50:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:50:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:50:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:50:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:50:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:50:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:50:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:50:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:50:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:50:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:50:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:50:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:50:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:50:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:50:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:50:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:50:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:50:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:50:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:50:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:50:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:50:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:50:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:50:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:50:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:50:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:50:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:50:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:50:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:50:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:50:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:50:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:50:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:50:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:50:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:50:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:50:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:50:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:50:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:50:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:50:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:50:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:50:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:50:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:50:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:50:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:50:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:50:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:50:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:50:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:50:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:50:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:50:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:50:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:50:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:50:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:50:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:50:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:50:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2020-10-20 05:50:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:50:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:50:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:50:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:50:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:50:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:50:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:50:06,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:50:06,640 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 05:50:06,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:06 BoogieIcfgContainer [2020-10-20 05:50:06,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:50:06,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:50:06,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:50:06,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:50:06,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:50:05" (1/3) ... [2020-10-20 05:50:06,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddd572c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:06, skipping insertion in model container [2020-10-20 05:50:06,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06" (2/3) ... [2020-10-20 05:50:06,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddd572c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:06, skipping insertion in model container [2020-10-20 05:50:06,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:06" (3/3) ... [2020-10-20 05:50:06,651 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-10-20 05:50:06,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:50:06,668 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 05:50:06,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 05:50:06,698 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:50:06,698 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:50:06,698 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:50:06,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:50:06,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:50:06,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:50:06,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:50:06,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:50:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-20 05:50:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:50:06,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:06,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:06,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:06,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2020-10-20 05:50:06,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:06,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238684398] [2020-10-20 05:50:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:06,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238684398] [2020-10-20 05:50:06,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:06,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:50:06,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89774095] [2020-10-20 05:50:06,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:06,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:06,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:06,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:06,968 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-20 05:50:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:07,136 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-20 05:50:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:07,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 05:50:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:07,148 INFO L225 Difference]: With dead ends: 28 [2020-10-20 05:50:07,148 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 05:50:07,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 05:50:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-20 05:50:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 05:50:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-20 05:50:07,187 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-10-20 05:50:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:07,187 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-20 05:50:07,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-20 05:50:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:50:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:07,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:50:07,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2020-10-20 05:50:07,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233142794] [2020-10-20 05:50:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:07,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233142794] [2020-10-20 05:50:07,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:07,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:50:07,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760472586] [2020-10-20 05:50:07,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:50:07,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:50:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:07,315 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2020-10-20 05:50:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:07,457 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-20 05:50:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:50:07,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 05:50:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:07,459 INFO L225 Difference]: With dead ends: 21 [2020-10-20 05:50:07,459 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 05:50:07,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:50:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 05:50:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 05:50:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 05:50:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-20 05:50:07,465 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-10-20 05:50:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:07,466 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-20 05:50:07,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:50:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-20 05:50:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:50:07,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:07,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:50:07,468 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2020-10-20 05:50:07,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298567288] [2020-10-20 05:50:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:07,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298567288] [2020-10-20 05:50:07,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:07,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:50:07,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336176628] [2020-10-20 05:50:07,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:07,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:07,605 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-10-20 05:50:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:07,791 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-20 05:50:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:50:07,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 05:50:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:07,796 INFO L225 Difference]: With dead ends: 27 [2020-10-20 05:50:07,796 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 05:50:07,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-20 05:50:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 05:50:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-20 05:50:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 05:50:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 05:50:07,802 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-10-20 05:50:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:07,803 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 05:50:07,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 05:50:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:50:07,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:07,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:50:07,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2020-10-20 05:50:07,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464199675] [2020-10-20 05:50:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 05:50:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:07,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464199675] [2020-10-20 05:50:07,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:07,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:50:07,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394779362] [2020-10-20 05:50:07,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:07,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:07,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:07,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:07,971 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2020-10-20 05:50:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,193 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-20 05:50:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:50:08,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-20 05:50:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,197 INFO L225 Difference]: With dead ends: 34 [2020-10-20 05:50:08,198 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 05:50:08,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:50:08,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 05:50:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-10-20 05:50:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 05:50:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-20 05:50:08,214 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-10-20 05:50:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,215 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-20 05:50:08,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-20 05:50:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:50:08,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:50:08,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2020-10-20 05:50:08,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162870786] [2020-10-20 05:50:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 05:50:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162870786] [2020-10-20 05:50:08,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:08,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 05:50:08,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016646790] [2020-10-20 05:50:08,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:50:08,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:50:08,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:50:08,381 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-10-20 05:50:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,573 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-20 05:50:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:50:08,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-20 05:50:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,575 INFO L225 Difference]: With dead ends: 28 [2020-10-20 05:50:08,575 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 05:50:08,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:50:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 05:50:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-20 05:50:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 05:50:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-20 05:50:08,580 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-10-20 05:50:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,580 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-20 05:50:08,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:50:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-20 05:50:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:50:08,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:50:08,583 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,583 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2020-10-20 05:50:08,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480183924] [2020-10-20 05:50:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480183924] [2020-10-20 05:50:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50789495] [2020-10-20 05:50:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 05:50:08,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:08,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 05:50:08,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830277569] [2020-10-20 05:50:08,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:50:08,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:50:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:50:08,910 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-10-20 05:50:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:09,089 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-20 05:50:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:50:09,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-20 05:50:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:09,091 INFO L225 Difference]: With dead ends: 38 [2020-10-20 05:50:09,091 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 05:50:09,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:50:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 05:50:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-20 05:50:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 05:50:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-20 05:50:09,096 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2020-10-20 05:50:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:09,097 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-20 05:50:09,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:50:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-20 05:50:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:50:09,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:09,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:09,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 05:50:09,310 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2020-10-20 05:50:09,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:09,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476059885] [2020-10-20 05:50:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:09,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476059885] [2020-10-20 05:50:09,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889995694] [2020-10-20 05:50:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 05:50:09,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:09,690 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:50:09,691 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:09,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:09,719 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:09,719 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-10-20 05:50:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:09,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:09,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-10-20 05:50:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213667777] [2020-10-20 05:50:09,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:50:09,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:09,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:50:09,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:50:09,946 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-10-20 05:50:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:10,411 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-20 05:50:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:50:10,412 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2020-10-20 05:50:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:10,413 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:50:10,413 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 05:50:10,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-10-20 05:50:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 05:50:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-20 05:50:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:50:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-20 05:50:10,419 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2020-10-20 05:50:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:10,420 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 05:50:10,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:50:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-20 05:50:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:50:10,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:10,421 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:10,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:10,630 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2020-10-20 05:50:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:10,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814655001] [2020-10-20 05:50:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 05:50:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:50:10,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814655001] [2020-10-20 05:50:10,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:10,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:50:10,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478573214] [2020-10-20 05:50:10,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:50:10,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:50:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:10,717 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-10-20 05:50:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:10,793 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-20 05:50:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:50:10,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-20 05:50:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:10,794 INFO L225 Difference]: With dead ends: 38 [2020-10-20 05:50:10,794 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 05:50:10,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 05:50:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 05:50:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 05:50:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-20 05:50:10,798 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-20 05:50:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:10,798 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-20 05:50:10,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:50:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-20 05:50:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:50:10,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:10,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:10,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:50:10,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:50:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2020-10-20 05:50:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:10,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805147607] [2020-10-20 05:50:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:11,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805147607] [2020-10-20 05:50:11,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331714756] [2020-10-20 05:50:11,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:11,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:50:11,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:11,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-20 05:50:11,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:11,140 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:50:11,140 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:11,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:11,149 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:11,149 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-10-20 05:50:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:11,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:11,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-10-20 05:50:11,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854671740] [2020-10-20 05:50:11,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 05:50:11,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:11,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 05:50:11,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-10-20 05:50:11,543 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2020-10-20 05:50:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:12,319 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-20 05:50:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 05:50:12,321 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-10-20 05:50:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:12,321 INFO L225 Difference]: With dead ends: 27 [2020-10-20 05:50:12,321 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:50:12,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 05:50:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:50:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:50:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:50:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:50:12,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-20 05:50:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:12,323 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:50:12,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 05:50:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:50:12,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:50:12,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:12,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:50:12 BoogieIcfgContainer [2020-10-20 05:50:12,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:50:12,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:50:12,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:50:12,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:50:12,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:06" (3/4) ... [2020-10-20 05:50:12,534 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2020-10-20 05:50:12,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:50:12,541 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:50:12,544 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 05:50:12,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 05:50:12,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:50:12,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:50:12,586 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:50:12,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:50:12,588 INFO L168 Benchmark]: Toolchain (without parser) took 7211.19 ms. Allocated memory was 35.1 MB in the beginning and 82.8 MB in the end (delta: 47.7 MB). Free memory was 13.9 MB in the beginning and 12.9 MB in the end (delta: 976.4 kB). Peak memory consumption was 48.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,589 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.04 ms. Allocated memory was 35.1 MB in the beginning and 45.6 MB in the end (delta: 10.5 MB). Free memory was 13.0 MB in the beginning and 27.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,590 INFO L168 Benchmark]: Boogie Preprocessor took 65.17 ms. Allocated memory is still 45.6 MB. Free memory was 26.9 MB in the beginning and 24.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,591 INFO L168 Benchmark]: RCFGBuilder took 525.02 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 16.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,592 INFO L168 Benchmark]: TraceAbstraction took 5886.97 ms. Allocated memory was 47.2 MB in the beginning and 82.8 MB in the end (delta: 35.7 MB). Free memory was 15.9 MB in the beginning and 17.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,592 INFO L168 Benchmark]: Witness Printer took 55.34 ms. Allocated memory is still 82.8 MB. Free memory was 17.1 MB in the beginning and 12.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:12,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 668.04 ms. Allocated memory was 35.1 MB in the beginning and 45.6 MB in the end (delta: 10.5 MB). Free memory was 13.0 MB in the beginning and 27.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 65.17 ms. Allocated memory is still 45.6 MB. Free memory was 26.9 MB in the beginning and 24.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 525.02 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 16.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5886.97 ms. Allocated memory was 47.2 MB in the beginning and 82.8 MB in the end (delta: 35.7 MB). Free memory was 15.9 MB in the beginning and 17.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.3 GB. * Witness Printer took 55.34 ms. Allocated memory is still 82.8 MB. Free memory was 17.1 MB in the beginning and 12.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 253 SDslu, 304 SDs, 0 SdLazy, 994 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 23561 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 7/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...