./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.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/array-memsafety/reverse_array_unsafe_false-valid-deref.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 2b641e49e75a310172f60778d80b34a59b72d2ae .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 18:07:24,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 18:07:24,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 18:07:24,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 18:07:24,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 18:07:24,562 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 18:07:24,564 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 18:07:24,566 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 18:07:24,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 18:07:24,568 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 18:07:24,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 18:07:24,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 18:07:24,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 18:07:24,573 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 18:07:24,574 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 18:07:24,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 18:07:24,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 18:07:24,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 18:07:24,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 18:07:24,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 18:07:24,583 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 18:07:24,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 18:07:24,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 18:07:24,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 18:07:24,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 18:07:24,589 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 18:07:24,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 18:07:24,592 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 18:07:24,593 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 18:07:24,594 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 18:07:24,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 18:07:24,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 18:07:24,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 18:07:24,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 18:07:24,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 18:07:24,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 18:07:24,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 18:07:24,614 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 18:07:24,614 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 18:07:24,616 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 18:07:24,616 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 18:07:24,616 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 18:07:24,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 18:07:24,617 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 18:07:24,618 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 18:07:24,619 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 18:07:24,619 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 18:07:24,619 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 18:07:24,619 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 18:07:24,620 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 18:07:24,620 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 18:07:24,620 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 18:07:24,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 18:07:24,620 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 18:07:24,620 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 18:07:24,621 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 18:07:24,622 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 18:07:24,622 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 -> 2b641e49e75a310172f60778d80b34a59b72d2ae [2019-01-14 18:07:24,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 18:07:24,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 18:07:24,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 18:07:24,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 18:07:24,676 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 18:07:24,677 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.i [2019-01-14 18:07:24,733 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc619fc7/13234133dd584decafca71b474f92eb0/FLAGaa8a35617 [2019-01-14 18:07:25,294 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 18:07:25,295 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/reverse_array_unsafe_false-valid-deref.i [2019-01-14 18:07:25,313 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc619fc7/13234133dd584decafca71b474f92eb0/FLAGaa8a35617 [2019-01-14 18:07:25,514 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc619fc7/13234133dd584decafca71b474f92eb0 [2019-01-14 18:07:25,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 18:07:25,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 18:07:25,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 18:07:25,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 18:07:25,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 18:07:25,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:07:25" (1/1) ... [2019-01-14 18:07:25,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1993ede3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:25, skipping insertion in model container [2019-01-14 18:07:25,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:07:25" (1/1) ... [2019-01-14 18:07:25,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 18:07:25,583 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 18:07:26,014 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:07:26,034 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 18:07:26,105 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:07:26,239 INFO L195 MainTranslator]: Completed translation [2019-01-14 18:07:26,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26 WrapperNode [2019-01-14 18:07:26,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 18:07:26,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 18:07:26,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 18:07:26,241 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 18:07:26,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (1/1) ... [2019-01-14 18:07:26,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 18:07:26,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 18:07:26,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 18:07:26,315 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 18:07:26,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (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 18:07:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 18:07:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 18:07:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-14 18:07:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-14 18:07:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 18:07:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 18:07:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 18:07:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 18:07:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 18:07:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 18:07:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 18:07:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 18:07:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 18:07:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 18:07:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 18:07:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 18:07:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 18:07:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 18:07:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 18:07:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 18:07:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 18:07:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 18:07:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 18:07:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 18:07:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 18:07:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 18:07:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 18:07:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 18:07:26,397 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 18:07:26,398 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 18:07:26,399 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 18:07:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 18:07:27,184 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 18:07:27,185 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-14 18:07:27,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:27 BoogieIcfgContainer [2019-01-14 18:07:27,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 18:07:27,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 18:07:27,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 18:07:27,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 18:07:27,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 06:07:25" (1/3) ... [2019-01-14 18:07:27,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736a06d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:07:27, skipping insertion in model container [2019-01-14 18:07:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:26" (2/3) ... [2019-01-14 18:07:27,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736a06d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:07:27, skipping insertion in model container [2019-01-14 18:07:27,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:27" (3/3) ... [2019-01-14 18:07:27,194 INFO L112 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe_false-valid-deref.i [2019-01-14 18:07:27,204 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 18:07:27,214 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-01-14 18:07:27,231 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-01-14 18:07:27,258 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 18:07:27,259 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 18:07:27,259 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 18:07:27,259 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 18:07:27,260 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 18:07:27,260 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 18:07:27,260 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 18:07:27,260 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 18:07:27,260 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 18:07:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-01-14 18:07:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 18:07:27,289 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:27,290 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:27,293 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION]=== [2019-01-14 18:07:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash -315217275, now seen corresponding path program 1 times [2019-01-14 18:07:27,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:27,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:27,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:27,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:27,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:27,479 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 18:07:27,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:27,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 18:07:27,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:07:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:07:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:07:27,506 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2019-01-14 18:07:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:27,659 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-01-14 18:07:27,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:07:27,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-01-14 18:07:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:27,676 INFO L225 Difference]: With dead ends: 54 [2019-01-14 18:07:27,677 INFO L226 Difference]: Without dead ends: 51 [2019-01-14 18:07:27,680 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 18:07:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-01-14 18:07:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-01-14 18:07:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-01-14 18:07:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2019-01-14 18:07:27,723 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 11 [2019-01-14 18:07:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:27,724 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2019-01-14 18:07:27,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:07:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2019-01-14 18:07:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 18:07:27,725 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:27,725 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:27,725 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION]=== [2019-01-14 18:07:27,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash -315217274, now seen corresponding path program 1 times [2019-01-14 18:07:27,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:27,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:27,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:27,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:27,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:27,962 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 8 [2019-01-14 18:07:27,964 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 18:07:27,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:27,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 18:07:27,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 18:07:27,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 18:07:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 18:07:27,969 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 3 states. [2019-01-14 18:07:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:28,041 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2019-01-14 18:07:28,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 18:07:28,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-01-14 18:07:28,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:28,044 INFO L225 Difference]: With dead ends: 95 [2019-01-14 18:07:28,044 INFO L226 Difference]: Without dead ends: 95 [2019-01-14 18:07:28,045 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:07:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-01-14 18:07:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 52. [2019-01-14 18:07:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-01-14 18:07:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-01-14 18:07:28,054 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 11 [2019-01-14 18:07:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:28,055 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-01-14 18:07:28,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 18:07:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-01-14 18:07:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 18:07:28,056 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:28,056 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:28,057 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION]=== [2019-01-14 18:07:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:28,057 INFO L82 PathProgramCache]: Analyzing trace with hash -315157692, now seen corresponding path program 1 times [2019-01-14 18:07:28,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:28,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:28,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:28,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:28,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:28,125 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 18:07:28,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:28,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 18:07:28,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 18:07:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 18:07:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 18:07:28,127 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2019-01-14 18:07:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:28,272 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2019-01-14 18:07:28,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 18:07:28,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 18:07:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:28,276 INFO L225 Difference]: With dead ends: 63 [2019-01-14 18:07:28,276 INFO L226 Difference]: Without dead ends: 63 [2019-01-14 18:07:28,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 18:07:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-01-14 18:07:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2019-01-14 18:07:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-01-14 18:07:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2019-01-14 18:07:28,288 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 11 [2019-01-14 18:07:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:28,290 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2019-01-14 18:07:28,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 18:07:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2019-01-14 18:07:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 18:07:28,291 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:28,292 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:28,292 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION]=== [2019-01-14 18:07:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:28,292 INFO L82 PathProgramCache]: Analyzing trace with hash -315157651, now seen corresponding path program 1 times [2019-01-14 18:07:28,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:28,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:28,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:28,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:28,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:07:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 18:07:28,392 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 18:07:28,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 06:07:28 BoogieIcfgContainer [2019-01-14 18:07:28,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 18:07:28,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 18:07:28,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 18:07:28,413 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 18:07:28,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:27" (3/4) ... [2019-01-14 18:07:28,416 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 18:07:28,456 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 18:07:28,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 18:07:28,457 INFO L168 Benchmark]: Toolchain (without parser) took 2939.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 947.3 MB in the beginning and 996.1 MB in the end (delta: -48.8 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,458 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:07:28,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,460 INFO L168 Benchmark]: Boogie Preprocessor took 74.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,460 INFO L168 Benchmark]: RCFGBuilder took 871.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,461 INFO L168 Benchmark]: TraceAbstraction took 1225.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,462 INFO L168 Benchmark]: Witness Printer took 43.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 18:07:28,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 719.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 871.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1225.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 547]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] int *arr = __builtin_alloca (length); [L546] i=0 VAL [__builtin_alloca (length)={1:0}, arr={1:0}, i=0, length=1] [L546] COND TRUE i