./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/memsafety/test-0158_false-valid-free.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f Calling Ultimate with: 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 /storage/repos/svcomp/c/memsafety/test-0158_false-valid-free.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 988613cde5038d59f240babca0a9fb7bbef562e6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 18:13:51,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 18:13:51,698 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 18:13:51,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 18:13:51,716 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 18:13:51,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 18:13:51,719 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 18:13:51,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 18:13:51,722 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 18:13:51,723 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 18:13:51,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 18:13:51,725 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 18:13:51,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 18:13:51,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 18:13:51,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 18:13:51,729 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 18:13:51,729 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 18:13:51,731 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 18:13:51,733 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 18:13:51,735 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 18:13:51,736 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 18:13:51,738 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 18:13:51,740 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 18:13:51,740 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 18:13:51,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 18:13:51,742 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 18:13:51,743 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 18:13:51,743 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 18:13:51,744 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 18:13:51,745 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 18:13:51,746 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 18:13:51,746 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 18:13:51,746 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 18:13:51,747 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 18:13:51,748 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 18:13:51,749 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 18:13:51,749 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 18:13:51,764 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 18:13:51,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 18:13:51,768 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 18:13:51,768 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 18:13:51,768 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 18:13:51,768 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 18:13:51,769 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 18:13:51,770 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 18:13:51,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 18:13:51,770 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 18:13:51,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 18:13:51,770 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 18:13:51,771 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 18:13:51,771 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 18:13:51,771 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 18:13:51,771 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 18:13:51,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 18:13:51,771 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 18:13:51,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 18:13:51,773 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 18:13:51,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 18:13:51,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 18:13:51,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 18:13:51,773 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 18:13:51,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 18:13:51,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> 988613cde5038d59f240babca0a9fb7bbef562e6 [2019-01-14 18:13:51,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 18:13:51,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 18:13:51,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 18:13:51,828 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 18:13:51,829 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 18:13:51,830 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/memsafety/test-0158_false-valid-free.i [2019-01-14 18:13:51,897 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac9d89be/66dea318825e4844878f890b666848f3/FLAGe08a64c7f [2019-01-14 18:13:52,456 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 18:13:52,457 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/memsafety/test-0158_false-valid-free.i [2019-01-14 18:13:52,472 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac9d89be/66dea318825e4844878f890b666848f3/FLAGe08a64c7f [2019-01-14 18:13:52,738 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac9d89be/66dea318825e4844878f890b666848f3 [2019-01-14 18:13:52,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 18:13:52,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 18:13:52,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 18:13:52,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 18:13:52,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 18:13:52,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:13:52" (1/1) ... [2019-01-14 18:13:52,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1439aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:52, skipping insertion in model container [2019-01-14 18:13:52,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:13:52" (1/1) ... [2019-01-14 18:13:52,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 18:13:52,817 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 18:13:53,175 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:13:53,185 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 18:13:53,237 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:13:53,410 INFO L195 MainTranslator]: Completed translation [2019-01-14 18:13:53,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53 WrapperNode [2019-01-14 18:13:53,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 18:13:53,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 18:13:53,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 18:13:53,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 18:13:53,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (1/1) ... [2019-01-14 18:13:53,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 18:13:53,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 18:13:53,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 18:13:53,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 18:13:53,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (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 [2019-01-14 18:13:53,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 18:13:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 18:13:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 18:13:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 18:13:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 18:13:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 18:13:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 18:13:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 18:13:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 18:13:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 18:13:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 18:13:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 18:13:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 18:13:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 18:13:53,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 18:13:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 18:13:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 18:13:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 18:13:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 18:13:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 18:13:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 18:13:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 18:13:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 18:13:53,585 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 18:13:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 18:13:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 18:13:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 18:13:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 18:13:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 18:13:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 18:13:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 18:13:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 18:13:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-01-14 18:13:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2019-01-14 18:13:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2019-01-14 18:13:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2019-01-14 18:13:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2019-01-14 18:13:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2019-01-14 18:13:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2019-01-14 18:13:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2019-01-14 18:13:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2019-01-14 18:13:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2019-01-14 18:13:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure index [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2019-01-14 18:13:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 18:13:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 18:13:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 18:13:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 18:13:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 18:13:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 18:13:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 18:13:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 18:13:54,288 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 18:13:54,289 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-14 18:13:54,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:13:54 BoogieIcfgContainer [2019-01-14 18:13:54,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 18:13:54,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 18:13:54,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 18:13:54,296 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 18:13:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 06:13:52" (1/3) ... [2019-01-14 18:13:54,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c03665b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:13:54, skipping insertion in model container [2019-01-14 18:13:54,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:13:53" (2/3) ... [2019-01-14 18:13:54,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c03665b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:13:54, skipping insertion in model container [2019-01-14 18:13:54,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:13:54" (3/3) ... [2019-01-14 18:13:54,303 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-free.i [2019-01-14 18:13:54,314 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 18:13:54,326 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2019-01-14 18:13:54,339 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2019-01-14 18:13:54,366 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 18:13:54,367 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 18:13:54,367 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 18:13:54,367 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 18:13:54,368 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 18:13:54,368 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 18:13:54,368 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 18:13:54,369 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 18:13:54,369 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 18:13:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-01-14 18:13:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 18:13:54,396 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:54,397 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:54,399 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash -664733145, now seen corresponding path program 1 times [2019-01-14 18:13:54,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:54,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:54,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:54,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:54,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:54,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:54,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 18:13:54,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:13:54,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:13:54,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:13:54,649 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-01-14 18:13:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:54,849 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2019-01-14 18:13:54,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:13:54,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-14 18:13:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:54,861 INFO L225 Difference]: With dead ends: 34 [2019-01-14 18:13:54,862 INFO L226 Difference]: Without dead ends: 31 [2019-01-14 18:13:54,864 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:13:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-01-14 18:13:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-01-14 18:13:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-14 18:13:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2019-01-14 18:13:54,905 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 7 [2019-01-14 18:13:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:54,906 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2019-01-14 18:13:54,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:13:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2019-01-14 18:13:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 18:13:54,907 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:54,907 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:54,909 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:54,910 INFO L82 PathProgramCache]: Analyzing trace with hash -664733144, now seen corresponding path program 1 times [2019-01-14 18:13:54,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:54,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:54,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:54,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:54,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:55,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:55,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 18:13:55,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:13:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:13:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:13:55,073 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand 3 states. [2019-01-14 18:13:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:55,220 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-01-14 18:13:55,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:13:55,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-14 18:13:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:55,222 INFO L225 Difference]: With dead ends: 26 [2019-01-14 18:13:55,222 INFO L226 Difference]: Without dead ends: 26 [2019-01-14 18:13:55,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:13:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-14 18:13:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-01-14 18:13:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-14 18:13:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2019-01-14 18:13:55,231 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 7 [2019-01-14 18:13:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:55,231 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2019-01-14 18:13:55,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:13:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2019-01-14 18:13:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-01-14 18:13:55,232 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:55,232 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:55,233 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash -886320083, now seen corresponding path program 1 times [2019-01-14 18:13:55,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:55,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:55,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:55,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:55,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:55,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:55,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:13:55,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:13:55,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:13:55,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:13:55,527 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 5 states. [2019-01-14 18:13:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:55,654 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-01-14 18:13:55,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:13:55,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-01-14 18:13:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:55,662 INFO L225 Difference]: With dead ends: 25 [2019-01-14 18:13:55,662 INFO L226 Difference]: Without dead ends: 25 [2019-01-14 18:13:55,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 18:13:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-01-14 18:13:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-01-14 18:13:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-14 18:13:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-01-14 18:13:55,667 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 13 [2019-01-14 18:13:55,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:55,667 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-01-14 18:13:55,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:13:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-01-14 18:13:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 18:13:55,668 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:55,668 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:55,669 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:55,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1706118745, now seen corresponding path program 1 times [2019-01-14 18:13:55,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:55,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:55,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:55,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:55,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:56,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:56,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:13:56,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:13:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:13:56,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:13:56,085 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 5 states. [2019-01-14 18:13:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:56,204 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-01-14 18:13:56,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:13:56,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-01-14 18:13:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:56,208 INFO L225 Difference]: With dead ends: 24 [2019-01-14 18:13:56,208 INFO L226 Difference]: Without dead ends: 24 [2019-01-14 18:13:56,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 18:13:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-01-14 18:13:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-01-14 18:13:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-14 18:13:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2019-01-14 18:13:56,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 14 [2019-01-14 18:13:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:56,215 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2019-01-14 18:13:56,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:13:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2019-01-14 18:13:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-14 18:13:56,216 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:56,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:56,216 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1350073489, now seen corresponding path program 1 times [2019-01-14 18:13:56,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:56,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:56,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:56,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:13:56,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:13:56,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:13:56,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:13:56,363 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 5 states. [2019-01-14 18:13:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:56,505 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-01-14 18:13:56,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:13:56,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-01-14 18:13:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:56,507 INFO L225 Difference]: With dead ends: 23 [2019-01-14 18:13:56,507 INFO L226 Difference]: Without dead ends: 23 [2019-01-14 18:13:56,508 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 18:13:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-14 18:13:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-14 18:13:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 18:13:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-01-14 18:13:56,512 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2019-01-14 18:13:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:56,512 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-01-14 18:13:56,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:13:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-01-14 18:13:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-14 18:13:56,513 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:56,513 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:56,514 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:56,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1097394857, now seen corresponding path program 1 times [2019-01-14 18:13:56,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:56,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:56,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:56,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:56,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:56,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 18:13:56,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 18:13:56,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 18:13:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 18:13:56,683 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 6 states. [2019-01-14 18:13:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:56,799 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-01-14 18:13:56,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 18:13:56,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-01-14 18:13:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:56,800 INFO L225 Difference]: With dead ends: 22 [2019-01-14 18:13:56,801 INFO L226 Difference]: Without dead ends: 22 [2019-01-14 18:13:56,801 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-01-14 18:13:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-14 18:13:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-01-14 18:13:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-14 18:13:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2019-01-14 18:13:56,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2019-01-14 18:13:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:56,805 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2019-01-14 18:13:56,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 18:13:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2019-01-14 18:13:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 18:13:56,806 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:56,806 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:56,806 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash -340497743, now seen corresponding path program 1 times [2019-01-14 18:13:56,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:56,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:56,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:13:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:13:56,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:13:56,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 18:13:56,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 18:13:56,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 18:13:56,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 18:13:56,938 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 6 states. [2019-01-14 18:13:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:13:57,080 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-01-14 18:13:57,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 18:13:57,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-01-14 18:13:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:13:57,081 INFO L225 Difference]: With dead ends: 21 [2019-01-14 18:13:57,082 INFO L226 Difference]: Without dead ends: 21 [2019-01-14 18:13:57,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-01-14 18:13:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-14 18:13:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-01-14 18:13:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-01-14 18:13:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-01-14 18:13:57,085 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 17 [2019-01-14 18:13:57,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:13:57,085 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-01-14 18:13:57,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 18:13:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-01-14 18:13:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 18:13:57,086 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:13:57,087 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:13:57,087 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 18:13:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:13:57,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1965495381, now seen corresponding path program 1 times [2019-01-14 18:13:57,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:13:57,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:13:57,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:57,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:13:57,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:13:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:13:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:13:57,150 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 18:13:57,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 06:13:57 BoogieIcfgContainer [2019-01-14 18:13:57,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 18:13:57,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 18:13:57,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 18:13:57,182 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 18:13:57,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:13:54" (3/4) ... [2019-01-14 18:13:57,185 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 18:13:57,237 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 18:13:57,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 18:13:57,238 INFO L168 Benchmark]: Toolchain (without parser) took 4495.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.3 MB in the beginning and 916.9 MB in the end (delta: 34.4 MB). Peak memory consumption was 157.1 MB. Max. memory is 11.5 GB. [2019-01-14 18:13:57,240 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:13:57,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2019-01-14 18:13:57,242 INFO L168 Benchmark]: Boogie Preprocessor took 100.22 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-01-14 18:13:57,243 INFO L168 Benchmark]: RCFGBuilder took 779.10 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: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. [2019-01-14 18:13:57,244 INFO L168 Benchmark]: TraceAbstraction took 2889.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 916.9 MB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. [2019-01-14 18:13:57,244 INFO L168 Benchmark]: Witness Printer took 55.82 ms. Allocated memory is still 1.2 GB. Free memory is still 916.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:13:57,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 665.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 100.22 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 779.10 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: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2889.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 916.9 MB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. * Witness Printer took 55.82 ms. Allocated memory is still 1.2 GB. Free memory is still 916.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 755]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L742-L749] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L750] data.p0 = malloc(37U) VAL [data={-3:0}, malloc(37U)={-1:0}] [L751] data.str.p2 = &data VAL [data={-3:0}, malloc(37U)={-1:0}] [L752] EXPR data.p0 VAL [data={-3:0}, data.p0={-1:0}, malloc(37U)={-1:0}] [L752] void *ptr = data.p0; [L753] data.str.c[1] = sizeof data.str.p1 VAL [data={-3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L754] EXPR data.p0 VAL [data={-3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L754] free(data.p0) VAL [data={-3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L754] free(data.p0) VAL [data={-3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L754] free(data.p0) [L755] free(ptr) VAL [data={-3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L755] free(ptr) VAL [data={-3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L755] free(ptr) VAL [data={-3:0}, malloc(37U)={-1:0}, ptr={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 17 error locations. UNSAFE Result, 2.8s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 107 SDtfs, 142 SDslu, 141 SDs, 0 SdLazy, 136 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 5539 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...