./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4d5612c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.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 a3eaec471f51d4269ee2125af75884a2ba8bd8fa ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memtrack) --- Real Ultimate output --- This is Ultimate 0.1.24-f4d5612 [2019-11-28 12:45:18,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 12:45:18,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 12:45:18,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 12:45:18,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 12:45:18,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 12:45:18,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 12:45:18,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 12:45:18,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 12:45:18,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 12:45:18,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 12:45:18,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 12:45:18,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 12:45:18,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 12:45:18,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 12:45:18,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 12:45:18,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 12:45:18,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 12:45:18,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 12:45:18,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 12:45:18,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 12:45:18,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 12:45:18,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 12:45:18,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 12:45:18,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 12:45:18,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 12:45:18,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 12:45:18,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 12:45:18,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 12:45:18,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 12:45:18,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 12:45:18,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 12:45:18,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 12:45:18,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 12:45:18,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 12:45:18,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 12:45:18,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 12:45:18,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 12:45:18,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 12:45:18,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 12:45:18,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 12:45:18,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 12:45:18,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 12:45:18,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 12:45:18,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 12:45:18,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 12:45:18,289 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 12:45:18,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 12:45:18,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 12:45:18,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 12:45:18,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 12:45:18,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 12:45:18,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 12:45:18,292 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 12:45:18,292 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 12:45:18,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 12:45:18,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 12:45:18,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 12:45:18,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 12:45:18,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 12:45:18,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 12:45:18,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 12:45:18,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 12:45:18,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 12:45:18,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 12:45:18,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 12:45:18,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 12:45:18,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 12:45:18,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 12:45:18,295 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 -> a3eaec471f51d4269ee2125af75884a2ba8bd8fa [2019-11-28 12:45:18,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 12:45:18,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 12:45:18,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 12:45:18,621 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 12:45:18,623 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 12:45:18,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2019-11-28 12:45:18,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7a82ac7/1d897b7cd91f4eca9a6aea3eabbd478a/FLAGeb0c154a6 [2019-11-28 12:45:19,257 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 12:45:19,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2019-11-28 12:45:19,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7a82ac7/1d897b7cd91f4eca9a6aea3eabbd478a/FLAGeb0c154a6 [2019-11-28 12:45:19,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7a82ac7/1d897b7cd91f4eca9a6aea3eabbd478a [2019-11-28 12:45:19,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 12:45:19,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 12:45:19,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 12:45:19,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 12:45:19,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 12:45:19,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:45:19" (1/1) ... [2019-11-28 12:45:19,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177923f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:19, skipping insertion in model container [2019-11-28 12:45:19,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:45:19" (1/1) ... [2019-11-28 12:45:19,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 12:45:19,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 12:45:20,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 12:45:20,042 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 12:45:20,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 12:45:20,148 INFO L208 MainTranslator]: Completed translation [2019-11-28 12:45:20,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20 WrapperNode [2019-11-28 12:45:20,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 12:45:20,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 12:45:20,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 12:45:20,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 12:45:20,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... [2019-11-28 12:45:20,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 12:45:20,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 12:45:20,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 12:45:20,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 12:45:20,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 12:45:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 12:45:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 12:45:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 12:45:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 12:45:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 12:45:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 12:45:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 12:45:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 12:45:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 12:45:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 12:45:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 12:45:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 12:45:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 12:45:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 12:45:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 12:45:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 12:45:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 12:45:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 12:45:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 12:45:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 12:45:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 12:45:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 12:45:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 12:45:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 12:45:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 12:45:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 12:45:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 12:45:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 12:45:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 12:45:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 12:45:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 12:45:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 12:45:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 12:45:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 12:45:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 12:45:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 12:45:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 12:45:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 12:45:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 12:45:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 12:45:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 12:45:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 12:45:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 12:45:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 12:45:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 12:45:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 12:45:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 12:45:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 12:45:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 12:45:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 12:45:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 12:45:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 12:45:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 12:45:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 12:45:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 12:45:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 12:45:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 12:45:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 12:45:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 12:45:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 12:45:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 12:45:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 12:45:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 12:45:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 12:45:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 12:45:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 12:45:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 12:45:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 12:45:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 12:45:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 12:45:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 12:45:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 12:45:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 12:45:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 12:45:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 12:45:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 12:45:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 12:45:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 12:45:20,718 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 12:45:21,067 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 12:45:21,067 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 12:45:21,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:45:21 BoogieIcfgContainer [2019-11-28 12:45:21,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 12:45:21,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 12:45:21,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 12:45:21,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 12:45:21,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:45:19" (1/3) ... [2019-11-28 12:45:21,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e797e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:45:21, skipping insertion in model container [2019-11-28 12:45:21,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:45:20" (2/3) ... [2019-11-28 12:45:21,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e797e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:45:21, skipping insertion in model container [2019-11-28 12:45:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:45:21" (3/3) ... [2019-11-28 12:45:21,076 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext.i [2019-11-28 12:45:21,085 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 12:45:21,092 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 36 error locations. [2019-11-28 12:45:21,104 INFO L249 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2019-11-28 12:45:21,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 12:45:21,121 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 12:45:21,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 12:45:21,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 12:45:21,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 12:45:21,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 12:45:21,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 12:45:21,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 12:45:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-28 12:45:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 12:45:21,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:21,152 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:21,153 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash 958004881, now seen corresponding path program 1 times [2019-11-28 12:45:21,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:21,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159335685] [2019-11-28 12:45:21,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:21,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159335685] [2019-11-28 12:45:21,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:21,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 12:45:21,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885451141] [2019-11-28 12:45:21,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 12:45:21,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 12:45:21,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 12:45:21,367 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-11-28 12:45:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:21,612 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2019-11-28 12:45:21,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 12:45:21,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-28 12:45:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:21,624 INFO L225 Difference]: With dead ends: 95 [2019-11-28 12:45:21,625 INFO L226 Difference]: Without dead ends: 87 [2019-11-28 12:45:21,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 12:45:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-28 12:45:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2019-11-28 12:45:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-28 12:45:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2019-11-28 12:45:21,666 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 11 [2019-11-28 12:45:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:21,667 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2019-11-28 12:45:21,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 12:45:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2019-11-28 12:45:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 12:45:21,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:21,668 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:21,669 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash -367606576, now seen corresponding path program 1 times [2019-11-28 12:45:21,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:21,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259029204] [2019-11-28 12:45:21,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:21,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259029204] [2019-11-28 12:45:21,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:21,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 12:45:21,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881147648] [2019-11-28 12:45:21,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 12:45:21,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:21,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 12:45:21,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 12:45:21,797 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 5 states. [2019-11-28 12:45:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:22,154 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2019-11-28 12:45:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 12:45:22,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-28 12:45:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:22,157 INFO L225 Difference]: With dead ends: 109 [2019-11-28 12:45:22,157 INFO L226 Difference]: Without dead ends: 109 [2019-11-28 12:45:22,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 12:45:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-28 12:45:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2019-11-28 12:45:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-28 12:45:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2019-11-28 12:45:22,182 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 12 [2019-11-28 12:45:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:22,182 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2019-11-28 12:45:22,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 12:45:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2019-11-28 12:45:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 12:45:22,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:22,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:22,184 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash -367606575, now seen corresponding path program 1 times [2019-11-28 12:45:22,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:22,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044988954] [2019-11-28 12:45:22,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:22,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044988954] [2019-11-28 12:45:22,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:22,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 12:45:22,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751648139] [2019-11-28 12:45:22,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 12:45:22,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:22,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 12:45:22,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 12:45:22,318 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 5 states. [2019-11-28 12:45:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:22,626 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2019-11-28 12:45:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 12:45:22,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-28 12:45:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:22,630 INFO L225 Difference]: With dead ends: 125 [2019-11-28 12:45:22,630 INFO L226 Difference]: Without dead ends: 125 [2019-11-28 12:45:22,631 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 12:45:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-28 12:45:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 108. [2019-11-28 12:45:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-28 12:45:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2019-11-28 12:45:22,644 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 12 [2019-11-28 12:45:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:22,645 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2019-11-28 12:45:22,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 12:45:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2019-11-28 12:45:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 12:45:22,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:22,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:22,647 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1360992556, now seen corresponding path program 1 times [2019-11-28 12:45:22,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:22,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985867212] [2019-11-28 12:45:22,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:22,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985867212] [2019-11-28 12:45:22,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:22,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 12:45:22,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196235200] [2019-11-28 12:45:22,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 12:45:22,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 12:45:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 12:45:22,837 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 7 states. [2019-11-28 12:45:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:23,212 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2019-11-28 12:45:23,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 12:45:23,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-28 12:45:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:23,215 INFO L225 Difference]: With dead ends: 182 [2019-11-28 12:45:23,215 INFO L226 Difference]: Without dead ends: 182 [2019-11-28 12:45:23,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 12:45:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-28 12:45:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2019-11-28 12:45:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-28 12:45:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2019-11-28 12:45:23,244 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 21 [2019-11-28 12:45:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:23,244 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2019-11-28 12:45:23,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 12:45:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2019-11-28 12:45:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 12:45:23,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:23,246 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:23,246 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 500555716, now seen corresponding path program 1 times [2019-11-28 12:45:23,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:23,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789762226] [2019-11-28 12:45:23,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:23,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789762226] [2019-11-28 12:45:23,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:23,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 12:45:23,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902141143] [2019-11-28 12:45:23,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 12:45:23,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:23,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 12:45:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 12:45:23,366 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 7 states. [2019-11-28 12:45:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:23,857 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2019-11-28 12:45:23,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 12:45:23,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-28 12:45:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:23,860 INFO L225 Difference]: With dead ends: 143 [2019-11-28 12:45:23,860 INFO L226 Difference]: Without dead ends: 143 [2019-11-28 12:45:23,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 12:45:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-11-28 12:45:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2019-11-28 12:45:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-28 12:45:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2019-11-28 12:45:23,870 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2019-11-28 12:45:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:23,870 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2019-11-28 12:45:23,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 12:45:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2019-11-28 12:45:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 12:45:23,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:23,872 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:23,872 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:23,873 INFO L82 PathProgramCache]: Analyzing trace with hash 500555717, now seen corresponding path program 1 times [2019-11-28 12:45:23,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:23,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358047432] [2019-11-28 12:45:23,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:24,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358047432] [2019-11-28 12:45:24,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:24,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 12:45:24,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808236473] [2019-11-28 12:45:24,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 12:45:24,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 12:45:24,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 12:45:24,036 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand 7 states. [2019-11-28 12:45:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:24,560 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2019-11-28 12:45:24,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 12:45:24,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-28 12:45:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:24,568 INFO L225 Difference]: With dead ends: 146 [2019-11-28 12:45:24,568 INFO L226 Difference]: Without dead ends: 146 [2019-11-28 12:45:24,568 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 12:45:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-28 12:45:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 106. [2019-11-28 12:45:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-28 12:45:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2019-11-28 12:45:24,576 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 21 [2019-11-28 12:45:24,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:24,577 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2019-11-28 12:45:24,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 12:45:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2019-11-28 12:45:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 12:45:24,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:24,578 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:24,579 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2098756743, now seen corresponding path program 1 times [2019-11-28 12:45:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:24,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387252760] [2019-11-28 12:45:24,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 12:45:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 12:45:24,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387252760] [2019-11-28 12:45:24,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 12:45:24,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 12:45:24,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117092923] [2019-11-28 12:45:24,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 12:45:24,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 12:45:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 12:45:24,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 12:45:24,678 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 7 states. [2019-11-28 12:45:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 12:45:25,006 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2019-11-28 12:45:25,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 12:45:25,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-28 12:45:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 12:45:25,010 INFO L225 Difference]: With dead ends: 172 [2019-11-28 12:45:25,010 INFO L226 Difference]: Without dead ends: 172 [2019-11-28 12:45:25,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 12:45:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-28 12:45:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 108. [2019-11-28 12:45:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-28 12:45:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2019-11-28 12:45:25,017 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 23 [2019-11-28 12:45:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 12:45:25,018 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2019-11-28 12:45:25,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 12:45:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2019-11-28 12:45:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 12:45:25,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 12:45:25,019 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 12:45:25,019 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr29ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr35ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 12:45:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 12:45:25,020 INFO L82 PathProgramCache]: Analyzing trace with hash -2098809298, now seen corresponding path program 1 times [2019-11-28 12:45:25,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 12:45:25,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423935863] [2019-11-28 12:45:25,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 12:45:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 12:45:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 12:45:25,075 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 12:45:25,076 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 12:45:25,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:45:25 BoogieIcfgContainer [2019-11-28 12:45:25,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 12:45:25,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 12:45:25,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 12:45:25,107 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 12:45:25,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:45:21" (3/4) ... [2019-11-28 12:45:25,110 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 12:45:25,190 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 12:45:25,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 12:45:25,192 INFO L168 Benchmark]: Toolchain (without parser) took 5625.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 107.3 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,193 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 12:45:25,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -136.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,200 INFO L168 Benchmark]: Boogie Preprocessor took 84.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,201 INFO L168 Benchmark]: RCFGBuilder took 833.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,201 INFO L168 Benchmark]: TraceAbstraction took 4037.02 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -33.3 MB). Peak memory consumption was 56.9 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,202 INFO L168 Benchmark]: Witness Printer took 83.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-28 12:45:25,205 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 581.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -136.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 833.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4037.02 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -33.3 MB). Peak memory consumption was 56.9 MB. Max. memory is 11.5 GB. * Witness Printer took 83.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 556]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] int i = 0; [L522] int y = 0; [L523] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L524] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L525] List t; [L526] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L527] i < 10 && __VERIFIER_nondet_int() [L527] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L527] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L535] y < 10 && __VERIFIER_nondet_int() [L535] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L535] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L543] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L544] i = 0 [L545] y = 0 [L546] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L547] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L547] COND FALSE !(p->h == 1) [L551] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L551] COND FALSE !(p->h == 2) [L555] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L555] COND TRUE p->h != 3 || (i + y) < 20 [L556] __VERIFIER_error() VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 111 locations, 36 error locations. Result: UNSAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 765 SDslu, 797 SDs, 0 SdLazy, 1751 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 240 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 8740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...