./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-ext-properties/test-0158_1_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/list-ext-properties/test-0158_1_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 138abb836fefa85c9c71aca16cbe8ef2e2e31ba9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:53:16,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 18:53:16,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 18:53:16,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 18:53:16,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 18:53:16,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 18:53:16,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 18:53:16,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 18:53:16,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 18:53:16,661 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 18:53:16,662 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 18:53:16,663 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 18:53:16,664 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 18:53:16,665 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 18:53:16,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 18:53:16,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 18:53:16,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 18:53:16,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 18:53:16,672 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 18:53:16,674 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 18:53:16,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 18:53:16,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 18:53:16,679 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 18:53:16,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 18:53:16,680 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 18:53:16,681 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 18:53:16,682 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 18:53:16,683 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 18:53:16,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 18:53:16,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 18:53:16,686 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 18:53:16,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 18:53:16,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 18:53:16,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 18:53:16,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 18:53:16,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 18:53:16,689 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 18:53:16,704 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 18:53:16,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 18:53:16,705 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 18:53:16,705 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 18:53:16,706 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 18:53:16,706 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 18:53:16,707 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 18:53:16,708 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 18:53:16,708 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 18:53:16,708 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 18:53:16,708 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 18:53:16,708 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 18:53:16,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 18:53:16,710 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 18:53:16,710 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 18:53:16,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 18:53:16,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 18:53:16,711 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 18:53:16,711 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 18:53:16,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 18:53:16,712 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 -> 138abb836fefa85c9c71aca16cbe8ef2e2e31ba9 [2019-01-14 18:53:16,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 18:53:16,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 18:53:16,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 18:53:16,765 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 18:53:16,766 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 18:53:16,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext-properties/test-0158_1_false-valid-free.i [2019-01-14 18:53:16,825 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632f156e5/b3ac2d8a354e4878bb5934c7464377b0/FLAG17a3ed265 [2019-01-14 18:53:17,307 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 18:53:17,307 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext-properties/test-0158_1_false-valid-free.i [2019-01-14 18:53:17,319 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632f156e5/b3ac2d8a354e4878bb5934c7464377b0/FLAG17a3ed265 [2019-01-14 18:53:17,603 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632f156e5/b3ac2d8a354e4878bb5934c7464377b0 [2019-01-14 18:53:17,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 18:53:17,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 18:53:17,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 18:53:17,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 18:53:17,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 18:53:17,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:53:17" (1/1) ... [2019-01-14 18:53:17,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263f7525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:17, skipping insertion in model container [2019-01-14 18:53:17,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:53:17" (1/1) ... [2019-01-14 18:53:17,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 18:53:17,674 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 18:53:18,053 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:53:18,061 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 18:53:18,125 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:53:18,181 INFO L195 MainTranslator]: Completed translation [2019-01-14 18:53:18,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18 WrapperNode [2019-01-14 18:53:18,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 18:53:18,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 18:53:18,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 18:53:18,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 18:53:18,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (1/1) ... [2019-01-14 18:53:18,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 18:53:18,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 18:53:18,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 18:53:18,310 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 18:53:18,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (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 18:53:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 18:53:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 18:53:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 18:53:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 18:53:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 18:53:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 18:53:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 18:53:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 18:53:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 18:53:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 18:53:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 18:53:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 18:53:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 18:53:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 18:53:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 18:53:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 18:53:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 18:53:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 18:53:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 18:53:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 18:53:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 18:53:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 18:53:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 18:53:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 18:53:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 18:53:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 18:53:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 18:53:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 18:53:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 18:53:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 18:53:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 18:53:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 18:53:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 18:53:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 18:53:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 18:53:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 18:53:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 18:53:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 18:53:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 18:53:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 18:53:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 18:53:19,086 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 18:53:19,087 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-14 18:53:19,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:53:19 BoogieIcfgContainer [2019-01-14 18:53:19,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 18:53:19,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 18:53:19,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 18:53:19,092 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 18:53:19,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 06:53:17" (1/3) ... [2019-01-14 18:53:19,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2278334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:53:19, skipping insertion in model container [2019-01-14 18:53:19,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:53:18" (2/3) ... [2019-01-14 18:53:19,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2278334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:53:19, skipping insertion in model container [2019-01-14 18:53:19,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:53:19" (3/3) ... [2019-01-14 18:53:19,095 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-free.i [2019-01-14 18:53:19,105 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 18:53:19,113 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-01-14 18:53:19,130 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-01-14 18:53:19,155 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 18:53:19,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 18:53:19,156 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 18:53:19,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 18:53:19,156 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 18:53:19,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 18:53:19,157 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 18:53:19,157 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 18:53:19,157 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 18:53:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-01-14 18:53:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 18:53:19,182 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:19,183 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:19,185 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1868982535, now seen corresponding path program 1 times [2019-01-14 18:53:19,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:19,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:19,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:19,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:19,376 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 18:53:19,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:19,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 18:53:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:53:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:53:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:53:19,396 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2019-01-14 18:53:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:19,582 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-01-14 18:53:19,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:53:19,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-14 18:53:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:19,592 INFO L225 Difference]: With dead ends: 40 [2019-01-14 18:53:19,592 INFO L226 Difference]: Without dead ends: 37 [2019-01-14 18:53:19,594 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 18:53:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-01-14 18:53:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-01-14 18:53:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-01-14 18:53:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2019-01-14 18:53:19,629 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 7 [2019-01-14 18:53:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:19,629 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2019-01-14 18:53:19,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:53:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2019-01-14 18:53:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 18:53:19,630 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:19,630 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:19,631 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:19,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1868982534, now seen corresponding path program 1 times [2019-01-14 18:53:19,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:19,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:19,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:19,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:19,778 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 18:53:19,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:19,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 18:53:19,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:53:19,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:53:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:53:19,781 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 3 states. [2019-01-14 18:53:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:19,916 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-01-14 18:53:19,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:53:19,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-14 18:53:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:19,918 INFO L225 Difference]: With dead ends: 30 [2019-01-14 18:53:19,918 INFO L226 Difference]: Without dead ends: 30 [2019-01-14 18:53:19,919 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 18:53:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-01-14 18:53:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-01-14 18:53:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-14 18:53:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-01-14 18:53:19,923 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 7 [2019-01-14 18:53:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:19,924 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-01-14 18:53:19,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:53:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-01-14 18:53:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-14 18:53:19,925 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:19,925 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:19,925 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:19,926 INFO L82 PathProgramCache]: Analyzing trace with hash 207144873, now seen corresponding path program 1 times [2019-01-14 18:53:19,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:19,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:19,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:19,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:20,124 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 18:53:20,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:20,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:53:20,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:53:20,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:53:20,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:53:20,125 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2019-01-14 18:53:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:20,269 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-01-14 18:53:20,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:53:20,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-01-14 18:53:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:20,271 INFO L225 Difference]: With dead ends: 29 [2019-01-14 18:53:20,271 INFO L226 Difference]: Without dead ends: 29 [2019-01-14 18:53:20,271 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 18:53:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-14 18:53:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-14 18:53:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-14 18:53:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-01-14 18:53:20,276 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2019-01-14 18:53:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:20,277 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-01-14 18:53:20,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:53:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-01-14 18:53:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-14 18:53:20,278 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:20,278 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:20,278 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:20,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:20,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2126523837, now seen corresponding path program 1 times [2019-01-14 18:53:20,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:20,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:20,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:20,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:20,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:20,407 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 18:53:20,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:20,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:53:20,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:53:20,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:53:20,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:53:20,408 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2019-01-14 18:53:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:20,803 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-01-14 18:53:20,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:53:20,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-01-14 18:53:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:20,805 INFO L225 Difference]: With dead ends: 28 [2019-01-14 18:53:20,805 INFO L226 Difference]: Without dead ends: 28 [2019-01-14 18:53:20,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 18:53:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-01-14 18:53:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-01-14 18:53:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-14 18:53:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-01-14 18:53:20,810 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2019-01-14 18:53:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:20,810 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-01-14 18:53:20,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:53:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-01-14 18:53:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 18:53:20,811 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:20,811 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 18:53:20,812 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:20,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1497729579, now seen corresponding path program 1 times [2019-01-14 18:53:20,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:20,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:20,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:20,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:20,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:20,894 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 18:53:20,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:20,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:53:20,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:53:20,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:53:20,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:53:20,896 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2019-01-14 18:53:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:21,107 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-01-14 18:53:21,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:53:21,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-14 18:53:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:21,109 INFO L225 Difference]: With dead ends: 27 [2019-01-14 18:53:21,109 INFO L226 Difference]: Without dead ends: 27 [2019-01-14 18:53:21,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 18:53:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-14 18:53:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-01-14 18:53:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-01-14 18:53:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-01-14 18:53:21,114 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2019-01-14 18:53:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:21,114 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-01-14 18:53:21,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:53:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-01-14 18:53:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 18:53:21,115 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:21,116 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 18:53:21,116 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash -815023233, now seen corresponding path program 1 times [2019-01-14 18:53:21,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:21,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:21,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:21,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:21,251 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 18:53:21,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:21,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 18:53:21,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 18:53:21,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 18:53:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 18:53:21,253 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2019-01-14 18:53:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:21,369 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-01-14 18:53:21,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 18:53:21,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-14 18:53:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:21,370 INFO L225 Difference]: With dead ends: 26 [2019-01-14 18:53:21,371 INFO L226 Difference]: Without dead ends: 26 [2019-01-14 18:53:21,372 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 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 18:53:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-14 18:53:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-01-14 18:53:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-14 18:53:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-01-14 18:53:21,377 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2019-01-14 18:53:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:21,377 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-01-14 18:53:21,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 18:53:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-01-14 18:53:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 18:53:21,378 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:21,378 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:21,379 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 504083629, now seen corresponding path program 1 times [2019-01-14 18:53:21,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:21,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:53:21,483 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 18:53:21,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:53:21,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 18:53:21,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 18:53:21,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 18:53:21,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 18:53:21,485 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2019-01-14 18:53:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:53:21,615 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-01-14 18:53:21,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 18:53:21,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-01-14 18:53:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:53:21,617 INFO L225 Difference]: With dead ends: 25 [2019-01-14 18:53:21,617 INFO L226 Difference]: Without dead ends: 25 [2019-01-14 18:53:21,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 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 18:53:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-01-14 18:53:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-01-14 18:53:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-14 18:53:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-14 18:53:21,621 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2019-01-14 18:53:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:53:21,621 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-14 18:53:21,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 18:53:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-14 18:53:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 18:53:21,622 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:53:21,622 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:53:21,623 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-01-14 18:53:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:53:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1553276607, now seen corresponding path program 1 times [2019-01-14 18:53:21,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:53:21,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:53:21,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:53:21,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:53:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:53:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:53:21,683 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 18:53:21,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 06:53:21 BoogieIcfgContainer [2019-01-14 18:53:21,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 18:53:21,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 18:53:21,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 18:53:21,716 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 18:53:21,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:53:19" (3/4) ... [2019-01-14 18:53:21,718 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 18:53:21,768 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 18:53:21,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 18:53:21,769 INFO L168 Benchmark]: Toolchain (without parser) took 4161.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 948.7 MB in the beginning and 967.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. [2019-01-14 18:53:21,770 INFO L168 Benchmark]: CDTParser took 0.15 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 18:53:21,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 927.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-01-14 18:53:21,772 INFO L168 Benchmark]: Boogie Preprocessor took 126.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -205.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-01-14 18:53:21,773 INFO L168 Benchmark]: RCFGBuilder took 778.54 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-01-14 18:53:21,773 INFO L168 Benchmark]: TraceAbstraction took 2626.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.4 MB in the end (delta: 114.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 11.5 GB. [2019-01-14 18:53:21,774 INFO L168 Benchmark]: Witness Printer took 52.65 ms. Allocated memory is still 1.2 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:53:21,779 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 572.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 927.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 126.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -205.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 778.54 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2626.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.4 MB in the end (delta: 114.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 11.5 GB. * Witness Printer took 52.65 ms. Allocated memory is still 1.2 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 641]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L622-L629] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L630] data.p0 = malloc(37U) VAL [data={-4:0}, malloc(37U)={-2:0}] [L631] EXPR data.p0 VAL [data={-4:0}, data.p0={-2:0}, malloc(37U)={-2:0}] [L631] void *ptr = data.p0; [L632] COND FALSE !(__VERIFIER_nondet_int()) [L635] data.str.p2 = 30 VAL [data={-4:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L637] EXPR data.str.p2 VAL [data={-4:0}, data.str.p2=30, malloc(37U)={-2:0}, ptr={-2:0}] [L637] COND FALSE !(25 > data.str.p2) [L640] EXPR data.p0 VAL [data={-4:0}, data.p0={-2:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L640] free(data.p0) VAL [data={-4:0}, data.p0={-2:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L640] free(data.p0) VAL [data={-4:0}, data.p0={-2:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L640] free(data.p0) [L641] free(ptr) VAL [data={-4:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L641] free(ptr) VAL [data={-4:0}, malloc(37U)={-2:0}, ptr={-2:0}] [L641] free(ptr) VAL [data={-4:0}, malloc(37U)={-2:0}, ptr={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 21 error locations. UNSAFE Result, 2.5s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 201 SDslu, 161 SDs, 0 SdLazy, 160 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5734 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...