./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-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_cmemrchr-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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:50:05,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:50:05,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:50:05,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:50:05,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:50:05,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:50:05,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:50:05,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:50:05,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:50:05,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:50:05,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:50:05,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:50:05,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:50:05,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:50:05,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:50:05,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:50:05,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:50:05,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:50:05,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:50:05,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:50:05,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:50:05,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:50:05,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:50:05,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:50:05,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:50:05,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:50:05,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:50:05,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:50:05,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:50:05,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:50:05,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:50:05,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:50:05,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:50:05,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:50:05,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:50:05,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:50:05,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:50:05,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:50:05,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:50:05,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:50:05,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:50:05,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:50:05,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:50:05,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:50:05,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:50:05,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:50:05,324 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:50:05,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:50:05,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:50:05,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:50:05,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:50:05,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:50:05,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:50:05,327 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:50:05,327 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:50:05,327 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:50:05,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:50:05,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:50:05,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:50:05,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:50:05,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:50:05,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:50:05,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:50:05,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:50:05,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:05,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:50:05,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:50:05,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:50:05,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:50:05,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:50:05,331 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 -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2020-10-20 05:50:05,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:50:05,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:50:05,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:50:05,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:50:05,552 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:50:05,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-10-20 05:50:05,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f062c269/d6db699a1ddb486d94e70b5f9591c492/FLAGc19df57c4 [2020-10-20 05:50:06,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:50:06,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-10-20 05:50:06,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f062c269/d6db699a1ddb486d94e70b5f9591c492/FLAGc19df57c4 [2020-10-20 05:50:06,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f062c269/d6db699a1ddb486d94e70b5f9591c492 [2020-10-20 05:50:06,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:50:06,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:50:06,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:06,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:50:06,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:50:06,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfdb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:06, skipping insertion in model container [2020-10-20 05:50:06,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:06" (1/1) ... [2020-10-20 05:50:06,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:50:06,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:50:06,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:06,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:50:06,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:07,048 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:50:07,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07 WrapperNode [2020-10-20 05:50:07,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:07,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:50:07,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:50:07,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:50:07,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (1/1) ... [2020-10-20 05:50:07,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:50:07,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:50:07,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:50:07,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:50:07,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (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 05:50:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:50:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:50:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:50:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:50:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:50:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:50:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:50:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2020-10-20 05:50:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:50:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:50:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:50:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:50:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:50:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:50:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:50:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:50:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:50:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:50:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:50:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:50:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:50:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:50:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:50:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:50:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:50:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:50:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:50:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:50:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:50:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:50:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:50:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:50:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:50:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:50:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:50:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:50:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:50:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:50:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:50:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:50:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:50:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:50:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:50:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:50:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:50:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:50:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:50:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:50:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:50:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:50:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:50:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:50:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:50:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:50:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:50:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:50:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:50:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:50:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:50:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:50:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:50:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:50:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:50:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:50:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:50:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:50:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:50:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:50:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:50:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:50:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:50:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:50:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:50:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:50:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:50:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:50:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:50:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:50:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:50:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:50:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:50:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:50:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:50:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:50:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:50:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:50:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:50:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:50:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:50:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:50:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:50:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:50:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:50:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:50:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:50:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:50:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-20 05:50:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2020-10-20 05:50:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:50:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:50:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:50:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:50:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:50:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:50:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:50:07,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:50:07,741 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:50:07,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:07 BoogieIcfgContainer [2020-10-20 05:50:07,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:50:07,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:50:07,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:50:07,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:50:07,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:50:06" (1/3) ... [2020-10-20 05:50:07,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e90affe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:07, skipping insertion in model container [2020-10-20 05:50:07,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:07" (2/3) ... [2020-10-20 05:50:07,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e90affe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:07, skipping insertion in model container [2020-10-20 05:50:07,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:07" (3/3) ... [2020-10-20 05:50:07,752 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2020-10-20 05:50:07,763 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:50:07,770 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 05:50:07,784 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 05:50:07,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:50:07,804 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:50:07,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:50:07,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:50:07,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:50:07,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:50:07,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:50:07,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:50:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-20 05:50:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:07,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:07,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2020-10-20 05:50:07,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826510949] [2020-10-20 05:50:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,061 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 05:50:08,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826510949] [2020-10-20 05:50:08,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:08,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:50:08,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649629156] [2020-10-20 05:50:08,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:50:08,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:50:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:08,087 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-20 05:50:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,200 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-20 05:50:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:08,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 05:50:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,211 INFO L225 Difference]: With dead ends: 33 [2020-10-20 05:50:08,212 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 05:50:08,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 05:50:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 05:50:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 05:50:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-20 05:50:08,265 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2020-10-20 05:50:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,265 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-20 05:50:08,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:50:08,266 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-20 05:50:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:08,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:50:08,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:08,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,268 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2020-10-20 05:50:08,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139529048] [2020-10-20 05:50:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,392 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 05:50:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139529048] [2020-10-20 05:50:08,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:08,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:08,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603480701] [2020-10-20 05:50:08,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:08,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:08,397 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-20 05:50:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,530 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-20 05:50:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:08,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 05:50:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,532 INFO L225 Difference]: With dead ends: 34 [2020-10-20 05:50:08,532 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 05:50:08,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 05:50:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-20 05:50:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:50:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-20 05:50:08,539 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2020-10-20 05:50:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,540 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-20 05:50:08,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-20 05:50:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:50:08,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,541 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:50:08,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2020-10-20 05:50:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458879655] [2020-10-20 05:50:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458879655] [2020-10-20 05:50:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677910136] [2020-10-20 05:50:08,663 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 05:50:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:50:08,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:08,871 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 05:50:08,872 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:08,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:08,880 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:08,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:50:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:08,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 05:50:08,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051938308] [2020-10-20 05:50:08,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:50:08,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:50:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:08,924 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2020-10-20 05:50:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:09,054 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-20 05:50:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:09,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-20 05:50:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:09,056 INFO L225 Difference]: With dead ends: 33 [2020-10-20 05:50:09,056 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 05:50:09,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 05:50:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-20 05:50:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 05:50:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-20 05:50:09,062 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2020-10-20 05:50:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:09,062 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-20 05:50:09,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:50:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-20 05:50:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:50:09,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:09,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:09,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 05:50:09,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:09,277 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2020-10-20 05:50:09,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:09,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845033127] [2020-10-20 05:50:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:09,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845033127] [2020-10-20 05:50:09,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:09,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:50:09,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818950804] [2020-10-20 05:50:09,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:09,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:09,413 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2020-10-20 05:50:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:09,665 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-20 05:50:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:50:09,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-20 05:50:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:09,670 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:50:09,670 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 05:50:09,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:50:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 05:50:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-20 05:50:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 05:50:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-20 05:50:09,681 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2020-10-20 05:50:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:09,681 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-20 05:50:09,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-20 05:50:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:50:09,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:09,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:09,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:50:09,684 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2020-10-20 05:50:09,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:09,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107209714] [2020-10-20 05:50:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:10,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107209714] [2020-10-20 05:50:10,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420908200] [2020-10-20 05:50:10,067 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 05:50:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-20 05:50:10,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:10,227 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 05:50:10,227 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:10,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:10,235 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:10,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-20 05:50:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:50:10,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:50:10,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2020-10-20 05:50:10,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610206114] [2020-10-20 05:50:10,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:50:10,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:50:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:50:10,418 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2020-10-20 05:50:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:10,610 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-10-20 05:50:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:50:10,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-20 05:50:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:10,612 INFO L225 Difference]: With dead ends: 35 [2020-10-20 05:50:10,612 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 05:50:10,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:50:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 05:50:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-20 05:50:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 05:50:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-20 05:50:10,617 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-10-20 05:50:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:10,617 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-20 05:50:10,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:50:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-20 05:50:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:50:10,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:10,619 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, 1, 1, 1] [2020-10-20 05:50:10,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:10,831 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2020-10-20 05:50:10,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:10,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461825006] [2020-10-20 05:50:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461825006] [2020-10-20 05:50:11,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996418115] [2020-10-20 05:50:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:50:11,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:11,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:11,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2020-10-20 05:50:11,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958770512] [2020-10-20 05:50:11,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:50:11,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:50:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:50:11,219 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-10-20 05:50:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:11,564 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-20 05:50:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:50:11,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-20 05:50:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:11,566 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:50:11,566 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 05:50:11,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-20 05:50:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 05:50:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-20 05:50:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:50:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-20 05:50:11,575 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2020-10-20 05:50:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:11,576 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-20 05:50:11,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:50:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-20 05:50:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:50:11,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:11,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:11,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:11,779 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2020-10-20 05:50:11,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:11,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239174207] [2020-10-20 05:50:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 05:50:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:50:11,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239174207] [2020-10-20 05:50:11,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:11,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:11,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116910560] [2020-10-20 05:50:11,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:11,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:11,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:11,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:11,880 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2020-10-20 05:50:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:11,941 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-20 05:50:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:11,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 05:50:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:11,942 INFO L225 Difference]: With dead ends: 51 [2020-10-20 05:50:11,942 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 05:50:11,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 05:50:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 05:50:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 05:50:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-20 05:50:11,946 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-10-20 05:50:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:11,946 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-20 05:50:11,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-20 05:50:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:50:11,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:11,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:11,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:50:11,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2020-10-20 05:50:11,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:11,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719792440] [2020-10-20 05:50:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:12,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719792440] [2020-10-20 05:50:12,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071940931] [2020-10-20 05:50:12,238 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:12,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:50:12,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:12,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-20 05:50:12,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:12,409 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 05:50:12,410 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:12,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:12,422 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:12,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-10-20 05:50:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:12,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:12,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2020-10-20 05:50:12,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621893580] [2020-10-20 05:50:12,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 05:50:12,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:12,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 05:50:12,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:50:12,740 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 24 states. [2020-10-20 05:50:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:14,319 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-20 05:50:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 05:50:14,320 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-10-20 05:50:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:14,322 INFO L225 Difference]: With dead ends: 59 [2020-10-20 05:50:14,322 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 05:50:14,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=268, Invalid=1802, Unknown=0, NotChecked=0, Total=2070 [2020-10-20 05:50:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 05:50:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2020-10-20 05:50:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 05:50:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-20 05:50:14,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2020-10-20 05:50:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:14,328 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-20 05:50:14,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 05:50:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-20 05:50:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 05:50:14,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:14,330 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:14,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:14,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2020-10-20 05:50:14,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:14,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076716580] [2020-10-20 05:50:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:14,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076716580] [2020-10-20 05:50:14,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878974544] [2020-10-20 05:50:14,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:14,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 05:50:14,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:14,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-20 05:50:14,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:14,906 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 05:50:14,907 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:14,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:14,911 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:14,911 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:50:15,130 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:50:15,131 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:15,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:15,136 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 05:50:15,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2020-10-20 05:50:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:15,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:15,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2020-10-20 05:50:15,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846903574] [2020-10-20 05:50:15,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 05:50:15,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:15,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 05:50:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:50:15,290 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2020-10-20 05:50:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:16,201 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-20 05:50:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 05:50:16,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 33 [2020-10-20 05:50:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:16,203 INFO L225 Difference]: With dead ends: 54 [2020-10-20 05:50:16,203 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 05:50:16,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2020-10-20 05:50:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 05:50:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-20 05:50:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 05:50:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-20 05:50:16,208 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2020-10-20 05:50:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:16,209 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-20 05:50:16,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 05:50:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-20 05:50:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:50:16,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:16,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:16,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:16,420 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:16,421 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2020-10-20 05:50:16,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:16,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741611897] [2020-10-20 05:50:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:16,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741611897] [2020-10-20 05:50:16,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696204265] [2020-10-20 05:50:16,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:16,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:50:16,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:16,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 05:50:16,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:17,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:50:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:17,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:17,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2020-10-20 05:50:17,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372348515] [2020-10-20 05:50:17,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-20 05:50:17,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:17,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-20 05:50:17,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-10-20 05:50:17,572 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 30 states. [2020-10-20 05:50:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:19,480 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-10-20 05:50:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-20 05:50:19,481 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 37 [2020-10-20 05:50:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:19,483 INFO L225 Difference]: With dead ends: 73 [2020-10-20 05:50:19,483 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 05:50:19,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=389, Invalid=3033, Unknown=0, NotChecked=0, Total=3422 [2020-10-20 05:50:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 05:50:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 43. [2020-10-20 05:50:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:50:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-20 05:50:19,489 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 37 [2020-10-20 05:50:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:19,489 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-20 05:50:19,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-20 05:50:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-20 05:50:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-20 05:50:19,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:19,491 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:19,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:19,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:19,702 INFO L82 PathProgramCache]: Analyzing trace with hash 446111132, now seen corresponding path program 5 times [2020-10-20 05:50:19,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:19,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598276580] [2020-10-20 05:50:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:19,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598276580] [2020-10-20 05:50:19,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369719617] [2020-10-20 05:50:19,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:20,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 05:50:20,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:20,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 05:50:20,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:20,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:20,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2020-10-20 05:50:20,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903907173] [2020-10-20 05:50:20,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 05:50:20,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:20,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 05:50:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:50:20,223 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2020-10-20 05:50:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:20,661 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-20 05:50:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:50:20,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-20 05:50:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:20,662 INFO L225 Difference]: With dead ends: 68 [2020-10-20 05:50:20,663 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 05:50:20,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:50:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 05:50:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-20 05:50:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 05:50:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-20 05:50:20,668 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2020-10-20 05:50:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:20,669 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-20 05:50:20,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 05:50:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-20 05:50:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 05:50:20,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:20,671 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:20,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:20,873 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash -840897799, now seen corresponding path program 6 times [2020-10-20 05:50:20,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:20,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712385208] [2020-10-20 05:50:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:21,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712385208] [2020-10-20 05:50:21,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242519231] [2020-10-20 05:50:21,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:21,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-20 05:50:21,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 58 conjunts are in the unsatisfiable core [2020-10-20 05:50:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:21,543 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 05:50:21,543 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:21,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:21,552 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:21,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-10-20 05:50:21,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:50:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:22,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:22,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 38 [2020-10-20 05:50:22,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411785898] [2020-10-20 05:50:22,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-20 05:50:22,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:22,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-20 05:50:22,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1381, Unknown=0, NotChecked=0, Total=1482 [2020-10-20 05:50:22,613 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 39 states. [2020-10-20 05:50:24,094 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-20 05:50:24,370 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-20 05:50:24,572 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-20 05:50:24,744 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-20 05:50:24,969 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-20 05:50:25,493 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-20 05:50:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:26,023 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-20 05:50:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-20 05:50:26,024 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 46 [2020-10-20 05:50:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:26,025 INFO L225 Difference]: With dead ends: 81 [2020-10-20 05:50:26,025 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 05:50:26,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=307, Invalid=3475, Unknown=0, NotChecked=0, Total=3782 [2020-10-20 05:50:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 05:50:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2020-10-20 05:50:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 05:50:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-20 05:50:26,032 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 46 [2020-10-20 05:50:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:26,033 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-20 05:50:26,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-20 05:50:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-20 05:50:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 05:50:26,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:26,035 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:26,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 05:50:26,239 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:26,240 INFO L82 PathProgramCache]: Analyzing trace with hash 43696598, now seen corresponding path program 7 times [2020-10-20 05:50:26,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:26,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203068272] [2020-10-20 05:50:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:26,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203068272] [2020-10-20 05:50:26,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576580703] [2020-10-20 05:50:26,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:26,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjunts are in the unsatisfiable core [2020-10-20 05:50:26,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:26,940 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 05:50:26,941 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:26,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:26,948 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:26,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-20 05:50:27,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:50:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:27,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:27,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 34 [2020-10-20 05:50:27,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895128211] [2020-10-20 05:50:27,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-20 05:50:27,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-20 05:50:27,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2020-10-20 05:50:27,729 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 35 states. [2020-10-20 05:50:29,354 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-20 05:50:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:30,877 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-10-20 05:50:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-20 05:50:30,878 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2020-10-20 05:50:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:30,879 INFO L225 Difference]: With dead ends: 117 [2020-10-20 05:50:30,879 INFO L226 Difference]: Without dead ends: 117 [2020-10-20 05:50:30,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=385, Invalid=3775, Unknown=0, NotChecked=0, Total=4160 [2020-10-20 05:50:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-20 05:50:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 52. [2020-10-20 05:50:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:50:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-20 05:50:30,896 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 50 [2020-10-20 05:50:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:30,897 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-20 05:50:30,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-20 05:50:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-20 05:50:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 05:50:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:30,899 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:31,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:31,109 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash -762817119, now seen corresponding path program 8 times [2020-10-20 05:50:31,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:31,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514935804] [2020-10-20 05:50:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:31,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514935804] [2020-10-20 05:50:31,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294843482] [2020-10-20 05:50:31,388 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:31,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:50:31,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:31,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 05:50:31,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:31,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:31,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2020-10-20 05:50:31,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796254898] [2020-10-20 05:50:31,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 05:50:31,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:31,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 05:50:31,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:50:31,595 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 18 states. [2020-10-20 05:50:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:32,220 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-20 05:50:32,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 05:50:32,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 51 [2020-10-20 05:50:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:32,222 INFO L225 Difference]: With dead ends: 82 [2020-10-20 05:50:32,222 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 05:50:32,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:50:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 05:50:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-20 05:50:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 05:50:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-20 05:50:32,229 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2020-10-20 05:50:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:32,229 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-20 05:50:32,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 05:50:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-20 05:50:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 05:50:32,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:32,231 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:32,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:32,440 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1336099044, now seen corresponding path program 9 times [2020-10-20 05:50:32,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:32,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499161307] [2020-10-20 05:50:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:33,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499161307] [2020-10-20 05:50:33,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351524345] [2020-10-20 05:50:33,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:33,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 05:50:33,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:33,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-20 05:50:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:36,687 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 43 [2020-10-20 05:50:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-20 05:50:36,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:36,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2020-10-20 05:50:36,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025403528] [2020-10-20 05:50:36,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-20 05:50:36,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:36,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-20 05:50:36,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1464, Unknown=0, NotChecked=0, Total=1560 [2020-10-20 05:50:36,700 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 40 states. [2020-10-20 05:50:41,205 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-20 05:50:41,519 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-20 05:50:42,010 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2020-10-20 05:50:42,337 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-20 05:50:42,957 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-20 05:50:43,767 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-20 05:50:44,058 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-20 05:50:44,339 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-20 05:50:44,652 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-10-20 05:50:44,980 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-20 05:50:47,404 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-20 05:50:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:47,526 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2020-10-20 05:50:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-20 05:50:47,527 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 55 [2020-10-20 05:50:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:47,528 INFO L225 Difference]: With dead ends: 95 [2020-10-20 05:50:47,528 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:50:47,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=693, Invalid=7317, Unknown=0, NotChecked=0, Total=8010 [2020-10-20 05:50:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:50:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:50:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:50:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:50:47,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-10-20 05:50:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:47,532 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:50:47,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-20 05:50:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:50:47,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:50:47,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 05:50:47,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:50:47 BoogieIcfgContainer [2020-10-20 05:50:47,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:50:47,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:50:47,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:50:47,742 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:50:47,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:07" (3/4) ... [2020-10-20 05:50:47,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:50:47,756 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:50:47,756 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2020-10-20 05:50:47,756 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:50:47,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:50:47,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:50:47,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:50:47,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:50:47,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:50:47,763 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-20 05:50:47,763 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-20 05:50:47,763 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:50:47,810 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:50:47,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:50:47,812 INFO L168 Benchmark]: Toolchain (without parser) took 41370.91 ms. Allocated memory was 34.6 MB in the beginning and 134.7 MB in the end (delta: 100.1 MB). Free memory was 10.6 MB in the beginning and 35.7 MB in the end (delta: -25.1 MB). Peak memory consumption was 75.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,812 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.16 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 9.8 MB in the beginning and 22.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,815 INFO L168 Benchmark]: Boogie Preprocessor took 105.27 ms. Allocated memory is still 45.6 MB. Free memory was 22.2 MB in the beginning and 19.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,816 INFO L168 Benchmark]: RCFGBuilder took 586.63 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 19.5 MB in the beginning and 24.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,816 INFO L168 Benchmark]: TraceAbstraction took 39996.41 ms. Allocated memory was 48.2 MB in the beginning and 134.7 MB in the end (delta: 86.5 MB). Free memory was 23.7 MB in the beginning and 39.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,817 INFO L168 Benchmark]: Witness Printer took 68.95 ms. Allocated memory is still 134.7 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:47,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 600.16 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 9.8 MB in the beginning and 22.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 105.27 ms. Allocated memory is still 45.6 MB. Free memory was 22.2 MB in the beginning and 19.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 586.63 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 19.5 MB in the beginning and 24.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 39996.41 ms. Allocated memory was 48.2 MB in the beginning and 134.7 MB in the end (delta: 86.5 MB). Free memory was 23.7 MB in the beginning and 39.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 14.3 GB. * Witness Printer took 68.95 ms. Allocated memory is still 134.7 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.9s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 321 SDtfs, 1130 SDslu, 1522 SDs, 0 SdLazy, 7087 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 784 GetRequests, 322 SyntacticMatches, 6 SemanticMatches, 456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4520 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=12, 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, 15 MinimizatonAttempts, 174 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 865 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 839 ConstructedInterpolants, 2 QuantifiedInterpolants, 347318 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1839 ConjunctsInSsa, 365 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 130/708 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...