./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified_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_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/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 8b87efc31cc381b9fe84243511097e1307d2087b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:45:31,804 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:45:31,805 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:45:31,811 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:45:31,812 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:45:31,812 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:45:31,813 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:45:31,814 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:45:31,815 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:45:31,816 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:45:31,817 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:45:31,817 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:45:31,818 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:45:31,818 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:45:31,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:45:31,820 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:45:31,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:45:31,821 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:45:31,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:45:31,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:45:31,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:45:31,825 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:45:31,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:45:31,827 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:45:31,827 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:45:31,828 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:45:31,829 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:45:31,829 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:45:31,830 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:45:31,831 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:45:31,831 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:45:31,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:45:31,832 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:45:31,832 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:45:31,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:45:31,833 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:45:31,833 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 13:45:31,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:45:31,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:45:31,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:45:31,845 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 13:45:31,845 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:45:31,845 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:45:31,845 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:45:31,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:45:31,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:45:31,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:45:31,847 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:45:31,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:45:31,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:45:31,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:45:31,849 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_be1fbfa5-396c-4ecb-9354-656fafc38968/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 -> 8b87efc31cc381b9fe84243511097e1307d2087b [2018-11-18 13:45:31,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:45:31,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:45:31,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:45:31,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:45:31,885 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:45:31,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:45:31,930 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/data/4e38620f1/e1d023d06d3d4f2da964b2a850306cf0/FLAG70b0a5337 [2018-11-18 13:45:32,366 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:45:32,367 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:45:32,375 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/data/4e38620f1/e1d023d06d3d4f2da964b2a850306cf0/FLAG70b0a5337 [2018-11-18 13:45:32,385 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/data/4e38620f1/e1d023d06d3d4f2da964b2a850306cf0 [2018-11-18 13:45:32,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:45:32,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:45:32,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:45:32,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:45:32,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:45:32,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1578e2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32, skipping insertion in model container [2018-11-18 13:45:32,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:45:32,435 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:45:32,636 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:45:32,644 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:45:32,727 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:45:32,750 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:45:32,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32 WrapperNode [2018-11-18 13:45:32,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:45:32,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:45:32,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:45:32,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:45:32,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... [2018-11-18 13:45:32,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:45:32,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:45:32,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:45:32,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:45:32,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/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 13:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 13:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 13:45:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 13:45:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 13:45:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 13:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 13:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 13:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 13:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 13:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 13:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 13:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 13:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 13:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 13:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 13:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 13:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 13:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 13:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 13:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 13:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:45:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:45:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:45:33,104 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:45:33,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:33 BoogieIcfgContainer [2018-11-18 13:45:33,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:45:33,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:45:33,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:45:33,108 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:45:33,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:45:32" (1/3) ... [2018-11-18 13:45:33,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb9a72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:45:33, skipping insertion in model container [2018-11-18 13:45:33,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:32" (2/3) ... [2018-11-18 13:45:33,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb9a72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:45:33, skipping insertion in model container [2018-11-18 13:45:33,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:33" (3/3) ... [2018-11-18 13:45:33,111 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:45:33,116 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:45:33,121 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:45:33,130 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:45:33,149 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:45:33,149 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:45:33,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:45:33,150 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:45:33,150 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:45:33,150 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:45:33,150 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:45:33,150 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:45:33,150 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:45:33,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 13:45:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:45:33,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,166 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] [2018-11-18 13:45:33,167 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,172 INFO L82 PathProgramCache]: Analyzing trace with hash -83103118, now seen corresponding path program 1 times [2018-11-18 13:45:33,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,258 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 13:45:33,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:33,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:45:33,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:45:33,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:45:33,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:45:33,276 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-18 13:45:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:33,289 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2018-11-18 13:45:33,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:45:33,290 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 13:45:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:33,298 INFO L225 Difference]: With dead ends: 67 [2018-11-18 13:45:33,298 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:45:33,301 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 13:45:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:45:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:45:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:45:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2018-11-18 13:45:33,329 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2018-11-18 13:45:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:33,329 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2018-11-18 13:45:33,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:45:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2018-11-18 13:45:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:45:33,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,330 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] [2018-11-18 13:45:33,330 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash -712481625, now seen corresponding path program 1 times [2018-11-18 13:45:33,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,394 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 13:45:33,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:33,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:45:33,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:45:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:45:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:45:33,396 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 4 states. [2018-11-18 13:45:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:33,427 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2018-11-18 13:45:33,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:45:33,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 13:45:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:33,431 INFO L225 Difference]: With dead ends: 54 [2018-11-18 13:45:33,431 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 13:45:33,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:45:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 13:45:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-11-18 13:45:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 13:45:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2018-11-18 13:45:33,439 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2018-11-18 13:45:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:33,439 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2018-11-18 13:45:33,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:45:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2018-11-18 13:45:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:45:33,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,440 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] [2018-11-18 13:45:33,440 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash -712483547, now seen corresponding path program 1 times [2018-11-18 13:45:33,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,483 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 13:45:33,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:33,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:45:33,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:45:33,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:45:33,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:45:33,484 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2018-11-18 13:45:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:33,550 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2018-11-18 13:45:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:45:33,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 13:45:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:33,551 INFO L225 Difference]: With dead ends: 68 [2018-11-18 13:45:33,552 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 13:45:33,552 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 13:45:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 13:45:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-11-18 13:45:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:45:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2018-11-18 13:45:33,555 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2018-11-18 13:45:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:33,555 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2018-11-18 13:45:33,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:45:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2018-11-18 13:45:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 13:45:33,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,556 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] [2018-11-18 13:45:33,556 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1235484885, now seen corresponding path program 1 times [2018-11-18 13:45:33,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,594 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 13:45:33,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:33,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:45:33,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:45:33,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:45:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:45:33,595 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 3 states. [2018-11-18 13:45:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:33,610 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2018-11-18 13:45:33,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:45:33,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-18 13:45:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:33,611 INFO L225 Difference]: With dead ends: 76 [2018-11-18 13:45:33,611 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 13:45:33,612 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:45:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 13:45:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-11-18 13:45:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:45:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 13:45:33,615 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 30 [2018-11-18 13:45:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:33,616 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 13:45:33,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:45:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2018-11-18 13:45:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 13:45:33,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,616 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] [2018-11-18 13:45:33,617 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash 214416531, now seen corresponding path program 1 times [2018-11-18 13:45:33,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:33,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:33,690 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/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 13:45:33,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:33,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:33,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 13:45:33,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:45:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:45:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:45:33,784 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 6 states. [2018-11-18 13:45:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:33,824 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2018-11-18 13:45:33,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:45:33,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-18 13:45:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:33,825 INFO L225 Difference]: With dead ends: 76 [2018-11-18 13:45:33,825 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 13:45:33,826 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 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 13:45:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 13:45:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2018-11-18 13:45:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 13:45:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-18 13:45:33,831 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 30 [2018-11-18 13:45:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:33,831 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 13:45:33,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:45:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2018-11-18 13:45:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 13:45:33,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:33,832 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2018-11-18 13:45:33,833 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:33,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash -327413181, now seen corresponding path program 1 times [2018-11-18 13:45:33,833 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:33,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:33,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:33,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:33,916 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/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 13:45:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:33,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:33,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:33,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 13:45:33,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:45:33,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:45:33,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:45:33,991 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 7 states. [2018-11-18 13:45:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:34,041 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2018-11-18 13:45:34,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:45:34,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-18 13:45:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:34,042 INFO L225 Difference]: With dead ends: 84 [2018-11-18 13:45:34,042 INFO L226 Difference]: Without dead ends: 62 [2018-11-18 13:45:34,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:45:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-18 13:45:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-11-18 13:45:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-18 13:45:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2018-11-18 13:45:34,048 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 38 [2018-11-18 13:45:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:34,048 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2018-11-18 13:45:34,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:45:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2018-11-18 13:45:34,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 13:45:34,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:34,049 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2018-11-18 13:45:34,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:34,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2145929229, now seen corresponding path program 2 times [2018-11-18 13:45:34,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:34,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:34,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:34,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:34,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:34,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:34,155 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/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 13:45:34,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:45:34,192 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:45:34,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:45:34,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:34,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:34,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 13:45:34,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:45:34,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:45:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:45:34,220 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 8 states. [2018-11-18 13:45:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:34,269 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2018-11-18 13:45:34,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:45:34,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-18 13:45:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:34,270 INFO L225 Difference]: With dead ends: 92 [2018-11-18 13:45:34,270 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 13:45:34,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:45:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 13:45:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2018-11-18 13:45:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 13:45:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2018-11-18 13:45:34,276 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 46 [2018-11-18 13:45:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:34,277 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2018-11-18 13:45:34,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:45:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2018-11-18 13:45:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 13:45:34,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:34,278 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 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 13:45:34,279 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:34,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:34,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1397403043, now seen corresponding path program 3 times [2018-11-18 13:45:34,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:34,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:34,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:34,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:45:34,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:34,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:34,371 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:34,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:45:34,409 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 13:45:34,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:45:34,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:34,436 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 16 treesize of output 13 [2018-11-18 13:45:34,440 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-11-18 13:45:34,449 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:45:34,450 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-11-18 13:45:34,450 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,455 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,459 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,462 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,462 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2018-11-18 13:45:34,476 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 30 treesize of output 23 [2018-11-18 13:45:34,480 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:45:34,481 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:45:34,482 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:45:34,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 46 [2018-11-18 13:45:34,488 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,500 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:34,505 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:17 [2018-11-18 13:45:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-18 13:45:34,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:45:34,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2018-11-18 13:45:34,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 13:45:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 13:45:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-18 13:45:34,593 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 15 states. [2018-11-18 13:45:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:35,084 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2018-11-18 13:45:35,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 13:45:35,084 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-11-18 13:45:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:35,085 INFO L225 Difference]: With dead ends: 116 [2018-11-18 13:45:35,085 INFO L226 Difference]: Without dead ends: 94 [2018-11-18 13:45:35,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 13:45:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-18 13:45:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 76. [2018-11-18 13:45:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-18 13:45:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2018-11-18 13:45:35,094 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 54 [2018-11-18 13:45:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:35,094 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2018-11-18 13:45:35,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 13:45:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2018-11-18 13:45:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 13:45:35,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:35,095 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 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 13:45:35,095 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:35,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1105275351, now seen corresponding path program 1 times [2018-11-18 13:45:35,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:35,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:35,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:35,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:45:35,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:45:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:45:35,173 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:45:35,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:45:35 BoogieIcfgContainer [2018-11-18 13:45:35,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:45:35,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:45:35,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:45:35,205 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:45:35,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:33" (3/4) ... [2018-11-18 13:45:35,209 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:45:35,257 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_be1fbfa5-396c-4ecb-9354-656fafc38968/bin-2019/uautomizer/witness.graphml [2018-11-18 13:45:35,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:45:35,258 INFO L168 Benchmark]: Toolchain (without parser) took 2870.15 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,259 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:45:35,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -200.1 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,260 INFO L168 Benchmark]: Boogie Preprocessor took 42.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,260 INFO L168 Benchmark]: RCFGBuilder took 310.72 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,260 INFO L168 Benchmark]: TraceAbstraction took 2098.79 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -33.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,261 INFO L168 Benchmark]: Witness Printer took 53.08 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:35,262 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 361.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -200.1 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 310.72 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2098.79 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -33.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.08 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; VAL [len=5] [L589] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L568] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L571] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L579] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=5, head={23:0}, len=4, malloc(sizeof(struct node))={23:0}, new_head={23:0}] [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={23:0}, len=4, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L571] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={23:0}, len=4, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={23:0}, len=4, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) VAL [\old(len)=5, head={23:0}, len=4, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head VAL [\old(len)=5, head={23:0}, len=4, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=5, head={24:0}, len=3, malloc(sizeof(struct node))={24:0}, new_head={24:0}] [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={24:0}, len=3, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L571] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={24:0}, len=3, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={24:0}, len=3, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) VAL [\old(len)=5, head={24:0}, len=3, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head VAL [\old(len)=5, head={24:0}, len=3, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=5, head={21:0}, len=2, malloc(sizeof(struct node))={21:0}, new_head={21:0}] [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={21:0}, len=2, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L571] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={21:0}, len=2, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={21:0}, len=2, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) VAL [\old(len)=5, head={21:0}, len=2, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head VAL [\old(len)=5, head={21:0}, len=2, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=5, head={26:0}, len=1, malloc(sizeof(struct node))={26:0}, new_head={26:0}] [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={26:0}, len=1, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L571] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={26:0}, len=1, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={26:0}, len=1, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) VAL [\old(len)=5, head={26:0}, len=1, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head VAL [\old(len)=5, head={26:0}, len=1, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=5, head={27:0}, len=0, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L569] COND FALSE !(len > 0) VAL [\old(len)=5, head={27:0}, len=0, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L585] RET return head; VAL [\old(len)=5, \result={27:0}, head={27:0}, len=0, malloc(sizeof(struct node))={27:0}, new_head={27:0}] [L589] EXPR dll_create(len) VAL [dll_create(len)={27:0}, len=5] [L589] DLL head = dll_create(len); [L590] FCALL head->next VAL [head={27:0}, head->next={26:0}, len=5] [L590] COND TRUE head->next [L591] EXPR, FCALL head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR, FCALL head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={27:0}, head->data_0=0, head->data_1=0, len=5] [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR, FCALL head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={27:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() VAL [head={27:0}, len=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. UNSAFE Result, 2.0s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 318 SDtfs, 311 SDslu, 988 SDs, 0 SdLazy, 445 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=8, 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, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 493 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 50774 SizeOfPredicates, 14 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 58/202 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...