./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 534681b11e8e68e6058985d885b01f2cbfa43e5b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 12:56:39,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:56:39,481 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:56:39,490 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:56:39,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:56:39,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:56:39,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:56:39,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:56:39,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:56:39,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:56:39,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:56:39,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:56:39,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:56:39,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:56:39,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:56:39,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:56:39,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:56:39,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:56:39,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:56:39,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:56:39,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:56:39,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:56:39,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:56:39,505 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:56:39,505 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:56:39,506 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:56:39,507 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:56:39,507 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:56:39,508 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:56:39,509 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:56:39,509 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:56:39,509 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:56:39,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:56:39,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:56:39,510 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:56:39,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:56:39,511 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 12:56:39,521 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:56:39,521 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:56:39,522 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:56:39,522 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:56:39,522 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:56:39,522 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:56:39,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:56:39,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:56:39,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:56:39,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:56:39,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:56:39,525 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:56:39,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:56:39,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:56:39,526 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer 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 ! call(__VERIFIER_error())) ) 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 -> 534681b11e8e68e6058985d885b01f2cbfa43e5b [2018-11-10 12:56:39,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:56:39,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:56:39,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:56:39,564 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:56:39,565 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:56:39,565 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i [2018-11-10 12:56:39,611 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/data/3795d40b6/198539d380104b86b2165b5413891fbc/FLAGd3d3e5a23 [2018-11-10 12:56:39,987 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:56:39,988 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i [2018-11-10 12:56:39,999 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/data/3795d40b6/198539d380104b86b2165b5413891fbc/FLAGd3d3e5a23 [2018-11-10 12:56:40,009 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/data/3795d40b6/198539d380104b86b2165b5413891fbc [2018-11-10 12:56:40,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:56:40,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:56:40,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:56:40,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:56:40,014 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:56:40,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b24ca81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40, skipping insertion in model container [2018-11-10 12:56:40,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:56:40,050 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:56:40,243 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:56:40,250 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:56:40,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:56:40,315 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:56:40,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40 WrapperNode [2018-11-10 12:56:40,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:56:40,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:56:40,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:56:40,316 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:56:40,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... [2018-11-10 12:56:40,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:56:40,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:56:40,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:56:40,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:56:40,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/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 [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2018-11-10 12:56:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2018-11-10 12:56:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2018-11-10 12:56:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2018-11-10 12:56:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2018-11-10 12:56:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:56:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:56:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 12:56:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 12:56:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 12:56:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 12:56:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 12:56:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 12:56:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 12:56:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 12:56:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 12:56:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 12:56:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 12:56:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 12:56:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 12:56:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 12:56:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2018-11-10 12:56:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2018-11-10 12:56:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:56:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 12:56:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:56:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:56:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 12:56:40,951 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:56:40,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:56:40 BoogieIcfgContainer [2018-11-10 12:56:40,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:56:40,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:56:40,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:56:40,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:56:40,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:56:40" (1/3) ... [2018-11-10 12:56:40,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166708d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:56:40, skipping insertion in model container [2018-11-10 12:56:40,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:56:40" (2/3) ... [2018-11-10 12:56:40,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166708d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:56:40, skipping insertion in model container [2018-11-10 12:56:40,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:56:40" (3/3) ... [2018-11-10 12:56:40,960 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort_false-unreach-call_false-valid-memcleanup.i [2018-11-10 12:56:40,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:56:40,974 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:56:40,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:56:41,011 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:56:41,012 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:56:41,012 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:56:41,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:56:41,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:56:41,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:56:41,013 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:56:41,013 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:56:41,013 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:56:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2018-11-10 12:56:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 12:56:41,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:41,036 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:41,039 INFO L424 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:41,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:41,044 INFO L82 PathProgramCache]: Analyzing trace with hash -175970113, now seen corresponding path program 1 times [2018-11-10 12:56:41,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:41,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:41,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:41,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:56:41,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:41,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:56:41,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:56:41,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:56:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:56:41,163 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 2 states. [2018-11-10 12:56:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:41,201 INFO L93 Difference]: Finished difference Result 390 states and 541 transitions. [2018-11-10 12:56:41,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:56:41,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-10 12:56:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:41,210 INFO L225 Difference]: With dead ends: 390 [2018-11-10 12:56:41,210 INFO L226 Difference]: Without dead ends: 180 [2018-11-10 12:56:41,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:56:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-11-10 12:56:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-11-10 12:56:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-10 12:56:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 203 transitions. [2018-11-10 12:56:41,246 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 203 transitions. Word has length 14 [2018-11-10 12:56:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:41,246 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 203 transitions. [2018-11-10 12:56:41,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:56:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 203 transitions. [2018-11-10 12:56:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 12:56:41,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:41,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:41,247 INFO L424 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:41,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1852700164, now seen corresponding path program 1 times [2018-11-10 12:56:41,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:41,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:41,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:41,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:56:41,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:41,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:56:41,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 12:56:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 12:56:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 12:56:41,297 INFO L87 Difference]: Start difference. First operand 180 states and 203 transitions. Second operand 3 states. [2018-11-10 12:56:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:41,333 INFO L93 Difference]: Finished difference Result 354 states and 400 transitions. [2018-11-10 12:56:41,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 12:56:41,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-10 12:56:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:41,336 INFO L225 Difference]: With dead ends: 354 [2018-11-10 12:56:41,336 INFO L226 Difference]: Without dead ends: 196 [2018-11-10 12:56:41,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 12:56:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-11-10 12:56:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2018-11-10 12:56:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-10 12:56:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2018-11-10 12:56:41,350 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 16 [2018-11-10 12:56:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:41,350 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2018-11-10 12:56:41,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 12:56:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2018-11-10 12:56:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 12:56:41,351 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:41,351 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:41,351 INFO L424 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:41,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1074444330, now seen corresponding path program 1 times [2018-11-10 12:56:41,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:41,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:56:41,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:41,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 12:56:41,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 12:56:41,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 12:56:41,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 12:56:41,448 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand 7 states. [2018-11-10 12:56:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:41,586 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2018-11-10 12:56:41,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 12:56:41,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-11-10 12:56:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:41,589 INFO L225 Difference]: With dead ends: 251 [2018-11-10 12:56:41,589 INFO L226 Difference]: Without dead ends: 246 [2018-11-10 12:56:41,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:56:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-11-10 12:56:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 189. [2018-11-10 12:56:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-11-10 12:56:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2018-11-10 12:56:41,606 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 32 [2018-11-10 12:56:41,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:41,606 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2018-11-10 12:56:41,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 12:56:41,606 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2018-11-10 12:56:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 12:56:41,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:41,607 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:41,608 INFO L424 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:41,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:41,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1343508195, now seen corresponding path program 1 times [2018-11-10 12:56:41,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:41,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:41,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:41,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 12:56:41,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:41,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 12:56:41,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:56:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:56:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:56:41,690 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand 5 states. [2018-11-10 12:56:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:41,894 INFO L93 Difference]: Finished difference Result 191 states and 213 transitions. [2018-11-10 12:56:41,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:56:41,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-11-10 12:56:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:41,896 INFO L225 Difference]: With dead ends: 191 [2018-11-10 12:56:41,896 INFO L226 Difference]: Without dead ends: 188 [2018-11-10 12:56:41,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:56:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-11-10 12:56:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-11-10 12:56:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-10 12:56:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2018-11-10 12:56:41,907 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 42 [2018-11-10 12:56:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:41,908 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2018-11-10 12:56:41,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:56:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2018-11-10 12:56:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 12:56:41,908 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:41,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:41,909 INFO L424 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:41,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1366777913, now seen corresponding path program 1 times [2018-11-10 12:56:41,909 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:41,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:41,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:41,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 12:56:41,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:41,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 12:56:41,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:56:41,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:56:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:56:41,960 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand 5 states. [2018-11-10 12:56:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:42,066 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2018-11-10 12:56:42,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:56:42,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-11-10 12:56:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:42,067 INFO L225 Difference]: With dead ends: 190 [2018-11-10 12:56:42,067 INFO L226 Difference]: Without dead ends: 187 [2018-11-10 12:56:42,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:56:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-11-10 12:56:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-11-10 12:56:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-11-10 12:56:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2018-11-10 12:56:42,074 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 42 [2018-11-10 12:56:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:42,074 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2018-11-10 12:56:42,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:56:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2018-11-10 12:56:42,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 12:56:42,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:42,075 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:42,075 INFO L424 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:42,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1325102455, now seen corresponding path program 1 times [2018-11-10 12:56:42,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:42,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:42,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:42,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:56:42,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:42,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-10 12:56:42,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 12:56:42,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 12:56:42,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 12:56:42,160 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand 9 states. [2018-11-10 12:56:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:42,394 INFO L93 Difference]: Finished difference Result 242 states and 268 transitions. [2018-11-10 12:56:42,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 12:56:42,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-11-10 12:56:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:42,396 INFO L225 Difference]: With dead ends: 242 [2018-11-10 12:56:42,396 INFO L226 Difference]: Without dead ends: 239 [2018-11-10 12:56:42,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-10 12:56:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-11-10 12:56:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 195. [2018-11-10 12:56:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-11-10 12:56:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 216 transitions. [2018-11-10 12:56:42,404 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 216 transitions. Word has length 46 [2018-11-10 12:56:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:42,404 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 216 transitions. [2018-11-10 12:56:42,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 12:56:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 216 transitions. [2018-11-10 12:56:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 12:56:42,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:42,405 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:42,406 INFO L424 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:42,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1549214733, now seen corresponding path program 1 times [2018-11-10 12:56:42,406 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:42,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:42,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:42,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:56:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:56:42,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:56:42,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-10 12:56:42,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 12:56:42,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 12:56:42,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 12:56:42,493 INFO L87 Difference]: Start difference. First operand 195 states and 216 transitions. Second operand 9 states. [2018-11-10 12:56:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:56:42,735 INFO L93 Difference]: Finished difference Result 241 states and 266 transitions. [2018-11-10 12:56:42,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 12:56:42,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-11-10 12:56:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:56:42,737 INFO L225 Difference]: With dead ends: 241 [2018-11-10 12:56:42,737 INFO L226 Difference]: Without dead ends: 238 [2018-11-10 12:56:42,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-10 12:56:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-11-10 12:56:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 203. [2018-11-10 12:56:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-11-10 12:56:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2018-11-10 12:56:42,745 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 46 [2018-11-10 12:56:42,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:56:42,745 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2018-11-10 12:56:42,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 12:56:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2018-11-10 12:56:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-10 12:56:42,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:56:42,746 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:56:42,746 INFO L424 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:56:42,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:56:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 103001211, now seen corresponding path program 1 times [2018-11-10 12:56:42,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:56:42,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:56:42,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:56:42,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:56:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:56:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:56:42,787 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:56:42,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:56:42 BoogieIcfgContainer [2018-11-10 12:56:42,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:56:42,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:56:42,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:56:42,813 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:56:42,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:56:40" (3/4) ... [2018-11-10 12:56:42,815 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 12:56:42,853 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8a65c53a-febe-4e2a-9aa4-2212f592cee2/bin-2019/uautomizer/witness.graphml [2018-11-10 12:56:42,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:56:42,854 INFO L168 Benchmark]: Toolchain (without parser) took 2842.65 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 237.5 MB). Free memory was 957.5 MB in the beginning and 1.2 GB in the end (delta: -220.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:56:42,855 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:56:42,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 928.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-11-10 12:56:42,857 INFO L168 Benchmark]: Boogie Preprocessor took 91.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 928.0 MB in the beginning and 1.2 GB in the end (delta: -233.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:56:42,857 INFO L168 Benchmark]: RCFGBuilder took 545.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:56:42,858 INFO L168 Benchmark]: TraceAbstraction took 1858.62 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:56:42,858 INFO L168 Benchmark]: Witness Printer took 40.21 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:56:42,862 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.66 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 928.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 91.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 928.0 MB in the beginning and 1.2 GB in the end (delta: -233.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 545.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1858.62 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 40.21 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); VAL [data={0:0}] [L628] COND TRUE __VERIFIER_nondet_int() [L629] EXPR, FCALL malloc(sizeof *node) VAL [data={0:0}, malloc(sizeof *node)={11:0}] [L629] struct node *node = malloc(sizeof *node); VAL [data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L630] COND FALSE !(!node) VAL [data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L632] FCALL node->next = node VAL [data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L633] FCALL node->value = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L634] EXPR, FCALL malloc(sizeof *item) VAL [data={0:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L634] struct list *item = malloc(sizeof *item); VAL [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L635] COND FALSE !(!item) VAL [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L637] FCALL item->slist = node VAL [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L638] FCALL item->next = data VAL [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L639] data = item VAL [data={10:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) VAL [data={10:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}] [L643] CALL inspect_before(data) VAL [shape={10:0}] [L604] COND FALSE !(!(shape)) VAL [shape={10:0}, shape={10:0}] [L604] COND FALSE !(0) VAL [shape={10:0}, shape={10:0}] [L605] FCALL shape->next VAL [shape={10:0}, shape={10:0}, shape->next={0:0}] [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) VAL [shape={10:0}, shape={10:0}] [L611] COND FALSE !(0) VAL [shape={10:0}, shape={10:0}] [L612] EXPR, FCALL shape->next VAL [shape={10:0}, shape={10:0}, shape->next={0:0}] [L612] COND FALSE !(!(shape->next == ((void *)0))) [L612] COND FALSE !(0) VAL [shape={10:0}, shape={10:0}] [L613] EXPR, FCALL shape->slist VAL [shape={10:0}, shape={10:0}, shape->slist={11:0}] [L613] COND FALSE !(!(shape->slist)) [L613] COND FALSE !(0) VAL [shape={10:0}, shape={10:0}] [L614] EXPR, FCALL shape->slist VAL [shape={10:0}, shape={10:0}, shape->slist={11:0}] [L614] EXPR, FCALL shape->slist->next VAL [shape={10:0}, shape={10:0}, shape->slist={11:0}, shape->slist->next={11:0}] [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 205 locations, 1 error locations. UNSAFE Result, 1.8s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1358 SDtfs, 630 SDslu, 4023 SDs, 0 SdLazy, 1028 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=7, 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, 149 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 37636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...