./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/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 dfa29c268b4cea6214da8605085222e43705cbc6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 10:16:09,353 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:16:09,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:16:09,361 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:16:09,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:16:09,362 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:16:09,363 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:16:09,364 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:16:09,365 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:16:09,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:16:09,366 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:16:09,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:16:09,367 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:16:09,368 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:16:09,369 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:16:09,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:16:09,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:16:09,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:16:09,372 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:16:09,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:16:09,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:16:09,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:16:09,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:16:09,377 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:16:09,377 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:16:09,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:16:09,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:16:09,379 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:16:09,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:16:09,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:16:09,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:16:09,381 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:16:09,381 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:16:09,381 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:16:09,382 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:16:09,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:16:09,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:16:09,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:16:09,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:16:09,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:16:09,393 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:16:09,394 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:16:09,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:16:09,394 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:16:09,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:16:09,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:16:09,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:16:09,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:16:09,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:16:09,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:16:09,397 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:16:09,397 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:16:09,397 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:16:09,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:16:09,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:16:09,397 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_ad46ce21-2d77-4bf5-9396-fc28754e908d/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 -> dfa29c268b4cea6214da8605085222e43705cbc6 [2018-11-18 10:16:09,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:16:09,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:16:09,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:16:09,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:16:09,431 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:16:09,432 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-11-18 10:16:09,466 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/data/08f52ab8a/78312bf768be4f6dad8a717fadc364ff/FLAGc7c8fcbf8 [2018-11-18 10:16:09,900 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:16:09,901 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-11-18 10:16:09,908 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/data/08f52ab8a/78312bf768be4f6dad8a717fadc364ff/FLAGc7c8fcbf8 [2018-11-18 10:16:09,917 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/data/08f52ab8a/78312bf768be4f6dad8a717fadc364ff [2018-11-18 10:16:09,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:16:09,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:16:09,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:16:09,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:16:09,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:16:09,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:16:09" (1/1) ... [2018-11-18 10:16:09,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709bd6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:09, skipping insertion in model container [2018-11-18 10:16:09,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:16:09" (1/1) ... [2018-11-18 10:16:09,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:16:09,956 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:16:10,134 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:16:10,141 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:16:10,166 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:16:10,240 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:16:10,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10 WrapperNode [2018-11-18 10:16:10,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:16:10,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:16:10,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:16:10,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:16:10,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... [2018-11-18 10:16:10,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:16:10,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:16:10,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:16:10,275 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:16:10,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/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 [2018-11-18 10:16:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:16:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:16:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 10:16:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:16:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:16:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:16:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 10:16:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 10:16:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 10:16:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 10:16:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 10:16:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 10:16:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 10:16:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 10:16:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 10:16:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:16:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 10:16:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:16:10,550 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:16:10,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:16:10 BoogieIcfgContainer [2018-11-18 10:16:10,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:16:10,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:16:10,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:16:10,553 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:16:10,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:16:09" (1/3) ... [2018-11-18 10:16:10,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32379875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:16:10, skipping insertion in model container [2018-11-18 10:16:10,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:16:10" (2/3) ... [2018-11-18 10:16:10,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32379875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:16:10, skipping insertion in model container [2018-11-18 10:16:10,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:16:10" (3/3) ... [2018-11-18 10:16:10,556 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_false-unreach-call_false-valid-memcleanup.i [2018-11-18 10:16:10,561 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:16:10,565 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:16:10,573 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:16:10,594 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:16:10,594 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:16:10,595 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:16:10,595 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:16:10,595 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:16:10,595 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:16:10,595 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:16:10,595 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:16:10,595 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:16:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 10:16:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 10:16:10,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:16:10,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:16:10,612 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:16:10,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:16:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2008060971, now seen corresponding path program 1 times [2018-11-18 10:16:10,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:16:10,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:16:10,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:16:10,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:16:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:16:10,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:16:10,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:16:10,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:16:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:16:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:16:10,710 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-11-18 10:16:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:16:10,723 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-11-18 10:16:10,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:16:10,723 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-18 10:16:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:16:10,730 INFO L225 Difference]: With dead ends: 41 [2018-11-18 10:16:10,730 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 10:16:10,732 INFO L604 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 [2018-11-18 10:16:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 10:16:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 10:16:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 10:16:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-18 10:16:10,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-11-18 10:16:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:16:10,755 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-18 10:16:10,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:16:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-18 10:16:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 10:16:10,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:16:10,756 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:16:10,756 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:16:10,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:16:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash -984219335, now seen corresponding path program 1 times [2018-11-18 10:16:10,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:16:10,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:16:10,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:16:10,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:16:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:16:10,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:16:10,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:16:10,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:16:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:16:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:16:10,834 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-11-18 10:16:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:16:10,901 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-18 10:16:10,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:16:10,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-18 10:16:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:16:10,902 INFO L225 Difference]: With dead ends: 38 [2018-11-18 10:16:10,902 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:16:10,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:16:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:16:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2018-11-18 10:16:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 10:16:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-18 10:16:10,906 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2018-11-18 10:16:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:16:10,906 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-18 10:16:10,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:16:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-18 10:16:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 10:16:10,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:16:10,907 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:16:10,907 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:16:10,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:16:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1148372801, now seen corresponding path program 1 times [2018-11-18 10:16:10,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:16:10,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:16:10,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:16:10,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:16:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:16:11,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:16:11,030 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:16:11,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:16:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:16:11,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:16:11,103 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 10:16:11,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 10:16:11,105 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,107 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,113 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 10:16:11,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 10:16:11,115 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,116 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,120 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,120 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-11-18 10:16:11,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-18 10:16:11,160 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 10:16:11,161 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,163 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-18 10:16:11,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 10:16:11,174 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,177 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 10:16:11,179 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-18 10:16:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:16:11,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:16:11,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 10:16:11,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 10:16:11,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 10:16:11,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:16:11,206 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 6 states. [2018-11-18 10:16:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:16:11,273 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-18 10:16:11,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 10:16:11,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-18 10:16:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:16:11,274 INFO L225 Difference]: With dead ends: 44 [2018-11-18 10:16:11,274 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 10:16:11,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 10:16:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 10:16:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-11-18 10:16:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 10:16:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 10:16:11,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-11-18 10:16:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:16:11,278 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 10:16:11,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 10:16:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-18 10:16:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 10:16:11,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:16:11,279 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:16:11,279 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:16:11,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:16:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -577286192, now seen corresponding path program 1 times [2018-11-18 10:16:11,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:16:11,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:16:11,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:11,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:16:11,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:16:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:16:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:16:11,317 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:16:11,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:16:11 BoogieIcfgContainer [2018-11-18 10:16:11,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:16:11,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:16:11,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:16:11,341 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:16:11,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:16:10" (3/4) ... [2018-11-18 10:16:11,343 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:16:11,369 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad46ce21-2d77-4bf5-9396-fc28754e908d/bin-2019/uautomizer/witness.graphml [2018-11-18 10:16:11,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:16:11,369 INFO L168 Benchmark]: Toolchain (without parser) took 1449.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.1 MB in the beginning and 1.0 GB in the end (delta: -68.0 MB). Peak memory consumption was 90.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,370 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:16:11,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -200.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,371 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,371 INFO L168 Benchmark]: RCFGBuilder took 275.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,372 INFO L168 Benchmark]: TraceAbstraction took 790.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,372 INFO L168 Benchmark]: Witness Printer took 27.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:16:11,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -200.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 275.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 790.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. * Witness Printer took 27.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] EXPR, FCALL malloc(sizeof(struct node)) [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L628] COND FALSE !(a == 0) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L629] List t; [L630] List p = a; [L631] FCALL a->h = 2 VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] FCALL p->h = 1 [L634] EXPR, FCALL malloc(sizeof(struct node)) [L634] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L635] COND FALSE !(t == 0) VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L636] FCALL p->n = t [L637] EXPR, FCALL p->n [L637] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL p->h = 2 [L640] FCALL p->n = 0 [L641] p = a VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L642] COND TRUE p!=0 [L643] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={12:0}] [L643] COND TRUE p->h != 2 [L644] __VERIFIER_error() VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 50 SDslu, 89 SDs, 0 SdLazy, 54 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 6854 SizeOfPredicates, 7 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...