./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version c1f4b5c4 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/simple-ext.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1c4f57eca82444dbac59d6fae1e4e6e28bb6c95 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-c1f4b5c [2019-12-08 16:29:06,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 16:29:06,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 16:29:06,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 16:29:06,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 16:29:06,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 16:29:06,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 16:29:06,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 16:29:06,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 16:29:06,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 16:29:06,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 16:29:06,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 16:29:06,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 16:29:06,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 16:29:06,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 16:29:06,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 16:29:06,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 16:29:06,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 16:29:06,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 16:29:06,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 16:29:06,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 16:29:06,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 16:29:06,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 16:29:06,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 16:29:06,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 16:29:06,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 16:29:06,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 16:29:06,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 16:29:06,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 16:29:06,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 16:29:06,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 16:29:06,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 16:29:06,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 16:29:06,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 16:29:06,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 16:29:06,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 16:29:06,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 16:29:06,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 16:29:06,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 16:29:06,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 16:29:06,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 16:29:06,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2019-12-08 16:29:06,623 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 16:29:06,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 16:29:06,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 16:29:06,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 16:29:06,625 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 16:29:06,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 16:29:06,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 16:29:06,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-08 16:29:06,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 16:29:06,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 16:29:06,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 16:29:06,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-08 16:29:06,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-08 16:29:06,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 16:29:06,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-08 16:29:06,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 16:29:06,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 16:29:06,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 16:29:06,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 16:29:06,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 16:29:06,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 16:29:06,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 16:29:06,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 16:29:06,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 16:29:06,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 16:29:06,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 16:29:06,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 16:29:06,630 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-memcleanup) ) 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 -> e1c4f57eca82444dbac59d6fae1e4e6e28bb6c95 [2019-12-08 16:29:06,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 16:29:06,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 16:29:06,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 16:29:06,967 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 16:29:06,968 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 16:29:06,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/simple-ext.i [2019-12-08 16:29:07,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d6850b4/72a8427c63864b90bd2f37ab5e90ade5/FLAGe68bd6f34 [2019-12-08 16:29:07,593 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 16:29:07,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/simple-ext.i [2019-12-08 16:29:07,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d6850b4/72a8427c63864b90bd2f37ab5e90ade5/FLAGe68bd6f34 [2019-12-08 16:29:07,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d6850b4/72a8427c63864b90bd2f37ab5e90ade5 [2019-12-08 16:29:07,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 16:29:07,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-08 16:29:07,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 16:29:07,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 16:29:07,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 16:29:07,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:29:07" (1/1) ... [2019-12-08 16:29:07,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7ab8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:07, skipping insertion in model container [2019-12-08 16:29:07,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:29:07" (1/1) ... [2019-12-08 16:29:07,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 16:29:07,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 16:29:08,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 16:29:08,356 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 16:29:08,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 16:29:08,497 INFO L208 MainTranslator]: Completed translation [2019-12-08 16:29:08,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08 WrapperNode [2019-12-08 16:29:08,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 16:29:08,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 16:29:08,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 16:29:08,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 16:29:08,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (1/1) ... [2019-12-08 16:29:08,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 16:29:08,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 16:29:08,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 16:29:08,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 16:29:08,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (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 [2019-12-08 16:29:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-08 16:29:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 16:29:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-08 16:29:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-08 16:29:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-08 16:29:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-08 16:29:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-08 16:29:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-08 16:29:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-08 16:29:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-08 16:29:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-08 16:29:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-08 16:29:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-08 16:29:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-08 16:29:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-08 16:29:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-08 16:29:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-08 16:29:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-08 16:29:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-08 16:29:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-08 16:29:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-08 16:29:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-08 16:29:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-08 16:29:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-08 16:29:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-08 16:29:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-08 16:29:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-08 16:29:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-08 16:29:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-08 16:29:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-08 16:29:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-08 16:29:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-08 16:29:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-08 16:29:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-08 16:29:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-08 16:29:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-08 16:29:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-08 16:29:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-08 16:29:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-08 16:29:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-08 16:29:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-08 16:29:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-08 16:29:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-08 16:29:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-08 16:29:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-08 16:29:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-08 16:29:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-08 16:29:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-08 16:29:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-08 16:29:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-08 16:29:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-08 16:29:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-08 16:29:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-08 16:29:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-08 16:29:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-08 16:29:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-08 16:29:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-08 16:29:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-08 16:29:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-08 16:29:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-08 16:29:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-08 16:29:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-08 16:29:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-08 16:29:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-08 16:29:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-08 16:29:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-08 16:29:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-08 16:29:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-08 16:29:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-08 16:29:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-08 16:29:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-08 16:29:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-08 16:29:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-08 16:29:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-08 16:29:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-08 16:29:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-08 16:29:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-08 16:29:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-08 16:29:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-08 16:29:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-08 16:29:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-08 16:29:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-08 16:29:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-08 16:29:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-08 16:29:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-08 16:29:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-08 16:29:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-08 16:29:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-08 16:29:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-08 16:29:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-08 16:29:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-08 16:29:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-08 16:29:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-08 16:29:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-08 16:29:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-08 16:29:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-08 16:29:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-08 16:29:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-08 16:29:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-08 16:29:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-08 16:29:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-08 16:29:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-08 16:29:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-08 16:29:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-08 16:29:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-08 16:29:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-08 16:29:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-08 16:29:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-08 16:29:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-08 16:29:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-08 16:29:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-08 16:29:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-08 16:29:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-08 16:29:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-08 16:29:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-08 16:29:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-08 16:29:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 16:29:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-08 16:29:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-08 16:29:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 16:29:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 16:29:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-08 16:29:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 16:29:09,123 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-08 16:29:09,383 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 16:29:09,383 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-08 16:29:09,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:29:09 BoogieIcfgContainer [2019-12-08 16:29:09,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 16:29:09,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 16:29:09,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 16:29:09,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 16:29:09,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:29:07" (1/3) ... [2019-12-08 16:29:09,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdddafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:29:09, skipping insertion in model container [2019-12-08 16:29:09,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:29:08" (2/3) ... [2019-12-08 16:29:09,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdddafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:29:09, skipping insertion in model container [2019-12-08 16:29:09,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:29:09" (3/3) ... [2019-12-08 16:29:09,396 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2019-12-08 16:29:09,405 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 16:29:09,413 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-12-08 16:29:09,425 INFO L249 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-12-08 16:29:09,445 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 16:29:09,446 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-08 16:29:09,446 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 16:29:09,446 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 16:29:09,446 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 16:29:09,446 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 16:29:09,446 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 16:29:09,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 16:29:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-12-08 16:29:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-08 16:29:09,472 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 16:29:09,473 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 16:29:09,474 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-08 16:29:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 16:29:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -27019314, now seen corresponding path program 1 times [2019-12-08 16:29:09,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 16:29:09,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171608860] [2019-12-08 16:29:09,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 16:29:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 16:29:09,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171608860] [2019-12-08 16:29:09,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 16:29:09,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-08 16:29:09,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140460214] [2019-12-08 16:29:09,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-08 16:29:09,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 16:29:09,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-08 16:29:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-08 16:29:09,679 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2019-12-08 16:29:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 16:29:09,866 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2019-12-08 16:29:09,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-08 16:29:09,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-08 16:29:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 16:29:09,880 INFO L225 Difference]: With dead ends: 63 [2019-12-08 16:29:09,881 INFO L226 Difference]: Without dead ends: 56 [2019-12-08 16:29:09,886 INFO L631 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 [2019-12-08 16:29:09,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-08 16:29:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-08 16:29:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-08 16:29:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2019-12-08 16:29:09,927 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 10 [2019-12-08 16:29:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 16:29:09,928 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2019-12-08 16:29:09,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-08 16:29:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2019-12-08 16:29:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 16:29:09,929 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 16:29:09,929 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 16:29:09,930 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-08 16:29:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 16:29:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash -196709145, now seen corresponding path program 1 times [2019-12-08 16:29:09,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 16:29:09,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995079271] [2019-12-08 16:29:09,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 16:29:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 16:29:10,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995079271] [2019-12-08 16:29:10,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 16:29:10,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-08 16:29:10,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814496362] [2019-12-08 16:29:10,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-08 16:29:10,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 16:29:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-08 16:29:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-08 16:29:10,076 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2019-12-08 16:29:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 16:29:10,296 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2019-12-08 16:29:10,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-08 16:29:10,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-08 16:29:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 16:29:10,298 INFO L225 Difference]: With dead ends: 74 [2019-12-08 16:29:10,298 INFO L226 Difference]: Without dead ends: 74 [2019-12-08 16:29:10,299 INFO L631 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 [2019-12-08 16:29:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-08 16:29:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2019-12-08 16:29:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-08 16:29:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2019-12-08 16:29:10,309 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2019-12-08 16:29:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 16:29:10,309 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2019-12-08 16:29:10,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-08 16:29:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2019-12-08 16:29:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 16:29:10,310 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 16:29:10,310 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 16:29:10,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-08 16:29:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 16:29:10,312 INFO L82 PathProgramCache]: Analyzing trace with hash -196709144, now seen corresponding path program 1 times [2019-12-08 16:29:10,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 16:29:10,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658724540] [2019-12-08 16:29:10,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 16:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 16:29:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 16:29:10,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658724540] [2019-12-08 16:29:10,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 16:29:10,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-08 16:29:10,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160171647] [2019-12-08 16:29:10,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-08 16:29:10,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 16:29:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-08 16:29:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-08 16:29:10,418 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2019-12-08 16:29:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 16:29:10,647 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2019-12-08 16:29:10,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-08 16:29:10,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-08 16:29:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 16:29:10,649 INFO L225 Difference]: With dead ends: 81 [2019-12-08 16:29:10,649 INFO L226 Difference]: Without dead ends: 81 [2019-12-08 16:29:10,650 INFO L631 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 [2019-12-08 16:29:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-08 16:29:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2019-12-08 16:29:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-08 16:29:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2019-12-08 16:29:10,659 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 12 [2019-12-08 16:29:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 16:29:10,660 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2019-12-08 16:29:10,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-08 16:29:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2019-12-08 16:29:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-08 16:29:10,661 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 16:29:10,662 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 16:29:10,662 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-08 16:29:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 16:29:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1862002092, now seen corresponding path program 1 times [2019-12-08 16:29:10,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 16:29:10,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678650665] [2019-12-08 16:29:10,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 16:29:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 16:29:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 16:29:10,782 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 16:29:10,782 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 16:29:10,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:29:10 BoogieIcfgContainer [2019-12-08 16:29:10,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 16:29:10,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 16:29:10,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 16:29:10,832 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 16:29:10,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:29:09" (3/4) ... [2019-12-08 16:29:10,836 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 16:29:10,935 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 16:29:10,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 16:29:10,940 INFO L168 Benchmark]: Toolchain (without parser) took 3055.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 959.0 MB in the beginning and 955.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 139.1 MB. Max. memory is 11.5 GB. [2019-12-08 16:29:10,944 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 16:29:10,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 953.6 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-08 16:29:10,945 INFO L168 Benchmark]: Boogie Preprocessor took 122.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-08 16:29:10,946 INFO L168 Benchmark]: RCFGBuilder took 765.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. [2019-12-08 16:29:10,947 INFO L168 Benchmark]: TraceAbstraction took 1443.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 11.5 GB. [2019-12-08 16:29:10,947 INFO L168 Benchmark]: Witness Printer took 103.83 ms. Allocated memory is still 1.2 GB. Free memory is still 955.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 16:29:10,951 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 614.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 953.6 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 122.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 765.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1443.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 11.5 GB. * Witness Printer took 103.83 ms. Allocated memory is still 1.2 GB. Free memory is still 955.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; [L525] int i = 0; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L535] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] p = a [L537] i = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] COND TRUE p!=0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L539] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=0] [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 79 locations, 21 error locations. Result: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 195 SDslu, 48 SDs, 0 SdLazy, 287 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1394 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...