./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_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_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/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 1d36d9c90d70f68ab71543f184cd64aeaf02e524 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:24:35,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:24:35,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:24:35,968 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:24:35,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:24:35,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:24:35,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:24:35,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:24:35,972 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:24:35,973 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:24:35,973 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:24:35,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:24:35,974 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:24:35,975 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:24:35,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:24:35,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:24:35,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:24:35,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:24:35,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:24:35,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:24:35,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:24:35,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:24:35,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:24:35,983 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:24:35,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:24:35,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:24:35,985 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:24:35,986 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:24:35,986 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:24:35,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:24:35,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:24:35,988 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:24:35,988 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:24:35,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:24:35,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:24:35,989 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:24:35,989 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 15:24:35,999 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:24:35,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:24:36,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:24:36,000 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 15:24:36,000 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:24:36,001 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:24:36,001 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:24:36,001 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:24:36,001 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:24:36,001 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:24:36,001 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:24:36,002 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:24:36,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:24:36,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:24:36,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:24:36,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:24:36,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:24:36,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:24:36,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:24:36,004 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:24:36,004 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:24:36,004 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:24:36,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:24:36,004 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_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/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 -> 1d36d9c90d70f68ab71543f184cd64aeaf02e524 [2018-11-18 15:24:36,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:24:36,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:24:36,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:24:36,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:24:36,037 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:24:36,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-18 15:24:36,073 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/data/3f583d66b/6d9789e62b9c45c383b4f196d58ed78b/FLAG03cc1e0a6 [2018-11-18 15:24:36,451 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:24:36,451 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-18 15:24:36,460 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/data/3f583d66b/6d9789e62b9c45c383b4f196d58ed78b/FLAG03cc1e0a6 [2018-11-18 15:24:36,837 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/data/3f583d66b/6d9789e62b9c45c383b4f196d58ed78b [2018-11-18 15:24:36,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:24:36,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 15:24:36,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:24:36,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:24:36,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:24:36,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:24:36" (1/1) ... [2018-11-18 15:24:36,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbd711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:36, skipping insertion in model container [2018-11-18 15:24:36,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:24:36" (1/1) ... [2018-11-18 15:24:36,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:24:36,892 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:24:37,104 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:24:37,110 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:24:37,143 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:24:37,173 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:24:37,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37 WrapperNode [2018-11-18 15:24:37,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:24:37,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:24:37,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:24:37,174 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:24:37,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... [2018-11-18 15:24:37,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:24:37,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:24:37,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:24:37,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:24:37,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/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 15:24:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-18 15:24:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 15:24:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 15:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 15:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 15:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 15:24:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 15:24:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 15:24:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 15:24:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 15:24:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 15:24:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 15:24:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:24:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:24:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:24:37,591 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:24:37,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:24:37 BoogieIcfgContainer [2018-11-18 15:24:37,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:24:37,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:24:37,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:24:37,595 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:24:37,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:24:36" (1/3) ... [2018-11-18 15:24:37,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e208c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:24:37, skipping insertion in model container [2018-11-18 15:24:37,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:24:37" (2/3) ... [2018-11-18 15:24:37,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e208c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:24:37, skipping insertion in model container [2018-11-18 15:24:37,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:24:37" (3/3) ... [2018-11-18 15:24:37,598 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-18 15:24:37,603 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:24:37,608 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 15:24:37,617 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 15:24:37,634 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:24:37,635 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:24:37,635 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:24:37,635 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:24:37,635 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:24:37,635 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:24:37,636 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:24:37,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:24:37,636 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:24:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-11-18 15:24:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 15:24:37,655 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:37,656 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:24:37,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:37,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1270338, now seen corresponding path program 1 times [2018-11-18 15:24:37,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:37,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:37,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:37,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:37,742 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 15:24:37,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:24:37,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:24:37,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:24:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:24:37,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:24:37,757 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-11-18 15:24:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:37,776 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2018-11-18 15:24:37,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:24:37,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-18 15:24:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:37,783 INFO L225 Difference]: With dead ends: 80 [2018-11-18 15:24:37,784 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 15:24:37,786 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 15:24:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 15:24:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 15:24:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 15:24:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-11-18 15:24:37,812 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2018-11-18 15:24:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:37,813 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-11-18 15:24:37,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:24:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-11-18 15:24:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:24:37,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:37,814 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 15:24:37,814 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:37,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash 256070974, now seen corresponding path program 1 times [2018-11-18 15:24:37,814 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:37,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:37,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:37,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:37,892 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 15:24:37,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:24:37,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:24:37,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:24:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:24:37,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:24:37,894 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2018-11-18 15:24:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:37,954 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-11-18 15:24:37,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:24:37,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-11-18 15:24:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:37,955 INFO L225 Difference]: With dead ends: 50 [2018-11-18 15:24:37,955 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 15:24:37,955 INFO L604 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 [2018-11-18 15:24:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 15:24:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 15:24:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 15:24:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-18 15:24:37,959 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2018-11-18 15:24:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:37,959 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-18 15:24:37,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:24:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-18 15:24:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 15:24:37,960 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:37,960 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 15:24:37,960 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:37,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash -36569594, now seen corresponding path program 1 times [2018-11-18 15:24:37,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:37,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:37,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:37,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:24:38,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:24:38,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 15:24:38,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 15:24:38,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 15:24:38,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 15:24:38,048 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 9 states. [2018-11-18 15:24:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:38,126 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-11-18 15:24:38,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 15:24:38,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-11-18 15:24:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:38,127 INFO L225 Difference]: With dead ends: 44 [2018-11-18 15:24:38,127 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 15:24:38,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 15:24:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 15:24:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-18 15:24:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 15:24:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-18 15:24:38,132 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2018-11-18 15:24:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:38,132 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-18 15:24:38,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 15:24:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-18 15:24:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 15:24:38,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:38,133 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] [2018-11-18 15:24:38,133 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:38,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash -229115284, now seen corresponding path program 1 times [2018-11-18 15:24:38,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:38,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:38,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:38,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:24:38,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:24:38,190 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/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 15:24:38,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:38,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:24:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:24:38,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:24:38,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 15:24:38,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:24:38,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:24:38,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:24:38,291 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2018-11-18 15:24:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:38,350 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-11-18 15:24:38,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:24:38,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-11-18 15:24:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:38,352 INFO L225 Difference]: With dead ends: 58 [2018-11-18 15:24:38,352 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 15:24:38,352 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 15:24:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 15:24:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-11-18 15:24:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 15:24:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-18 15:24:38,356 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2018-11-18 15:24:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:38,356 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-18 15:24:38,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:24:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-18 15:24:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 15:24:38,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:38,357 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2018-11-18 15:24:38,358 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:38,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1457066700, now seen corresponding path program 2 times [2018-11-18 15:24:38,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:38,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:38,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:24:38,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:24:38,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:24:38,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:24:38,498 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:24:38,523 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:24:38,523 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:24:38,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:24:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:24:38,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:24:38,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2018-11-18 15:24:38,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 15:24:38,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 15:24:38,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:24:38,637 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 16 states. [2018-11-18 15:24:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:38,884 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-11-18 15:24:38,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 15:24:38,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2018-11-18 15:24:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:38,885 INFO L225 Difference]: With dead ends: 67 [2018-11-18 15:24:38,885 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 15:24:38,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2018-11-18 15:24:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 15:24:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-18 15:24:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:24:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-18 15:24:38,889 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 38 [2018-11-18 15:24:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:38,890 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-18 15:24:38,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 15:24:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-18 15:24:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 15:24:38,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:38,891 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2018-11-18 15:24:38,891 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:38,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash -128085278, now seen corresponding path program 3 times [2018-11-18 15:24:38,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:38,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:38,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:24:38,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:24:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:24:39,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:24:39,071 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:24:39,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:24:39,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 15:24:39,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:24:39,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:24:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 15:24:39,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:24:39,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21 [2018-11-18 15:24:39,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 15:24:39,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 15:24:39,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2018-11-18 15:24:39,187 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 21 states. [2018-11-18 15:24:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:24:39,548 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-18 15:24:39,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 15:24:39,548 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2018-11-18 15:24:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:24:39,550 INFO L225 Difference]: With dead ends: 67 [2018-11-18 15:24:39,550 INFO L226 Difference]: Without dead ends: 60 [2018-11-18 15:24:39,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 15:24:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-18 15:24:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2018-11-18 15:24:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 15:24:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-11-18 15:24:39,558 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 44 [2018-11-18 15:24:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:24:39,559 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-18 15:24:39,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 15:24:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-11-18 15:24:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 15:24:39,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:24:39,559 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2018-11-18 15:24:39,559 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:24:39,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:24:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2018625608, now seen corresponding path program 4 times [2018-11-18 15:24:39,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:24:39,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:24:39,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:39,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:24:39,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:24:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:24:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:24:39,600 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 15:24:39,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:24:39 BoogieIcfgContainer [2018-11-18 15:24:39,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:24:39,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:24:39,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:24:39,626 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:24:39,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:24:37" (3/4) ... [2018-11-18 15:24:39,628 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 15:24:39,667 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e06f2b99-acb1-45f9-bdb8-a40a018ccb20/bin-2019/uautomizer/witness.graphml [2018-11-18 15:24:39,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:24:39,668 INFO L168 Benchmark]: Toolchain (without parser) took 2827.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.9 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:24:39,669 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:24:39,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.44 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 929.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:24:39,670 INFO L168 Benchmark]: Boogie Preprocessor took 79.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 929.7 MB in the beginning and 1.1 GB in the end (delta: -212.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:24:39,670 INFO L168 Benchmark]: RCFGBuilder took 338.05 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:24:39,670 INFO L168 Benchmark]: TraceAbstraction took 2033.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -37.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:24:39,671 INFO L168 Benchmark]: Witness Printer took 41.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:24:39,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.44 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 929.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 929.7 MB in the beginning and 1.1 GB in the end (delta: -212.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 338.05 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2033.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -37.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; VAL [len=2] [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0] [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) VAL [\old(len)=3] [L564] SLL head = ((void *)0); VAL [\old(len)=3, head={0:0}, len=3] [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={6:0}, len=2, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={6:0}, len=2, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={6:0}, len=2, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={7:0}, len=1, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={7:0}, len=1, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={7:0}, len=1, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={9:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L565] COND FALSE !(len > 0) VAL [\old(len)=3, head={9:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L574] RET return head; VAL [\old(len)=3, \result={9:0}, head={9:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L596] EXPR sll_create(len + 1) VAL [len=2, sll_create(len + 1)={9:0}] [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) VAL [head={9:0}] [L577] int len = 0; VAL [head={9:0}, head={9:0}, len=0] [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) VAL [head={0:0}, head={9:0}, len=3] [L582] RET return len; VAL [\result=3, head={9:0}, head={0:0}, len=3] [L597] EXPR sll_length(s) VAL [len=2, s={9:0}, sll_length(s)=3] [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() VAL [len=2, s={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 53 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 116 SDslu, 1122 SDs, 0 SdLazy, 729 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, 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, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 361 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 306 ConstructedInterpolants, 0 QuantifiedInterpolants, 35231 SizeOfPredicates, 5 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 36/78 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...