./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag_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_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/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 6ebd5b9a3160cad0f8876c1414f4b918e994ed8d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:34:39,607 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:34:39,609 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:34:39,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:34:39,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:34:39,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:34:39,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:34:39,619 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:34:39,620 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:34:39,621 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:34:39,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:34:39,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:34:39,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:34:39,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:34:39,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:34:39,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:34:39,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:34:39,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:34:39,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:34:39,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:34:39,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:34:39,633 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:34:39,635 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:34:39,636 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:34:39,636 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:34:39,637 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:34:39,638 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:34:39,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:34:39,639 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:34:39,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:34:39,640 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:34:39,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:34:39,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:34:39,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:34:39,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:34:39,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:34:39,643 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 16:34:39,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:34:39,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:34:39,656 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:34:39,657 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 16:34:39,657 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:34:39,657 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:34:39,657 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:34:39,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:34:39,658 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:34:39,658 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:34:39,658 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:34:39,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:34:39,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:34:39,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:34:39,660 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:34:39,660 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:34:39,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:34:39,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:34:39,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:34:39,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:34:39,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:34:39,661 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:34:39,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:34:39,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:34:39,661 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_6dea2618-193b-40b1-bca0-2c6772c349dc/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 -> 6ebd5b9a3160cad0f8876c1414f4b918e994ed8d [2018-11-18 16:34:39,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:34:39,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:34:39,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:34:39,707 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:34:39,708 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:34:39,708 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:34:39,761 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/data/3305bf26e/5c68a5f442664171b7cd50ffebb42768/FLAG571af682b [2018-11-18 16:34:40,193 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:34:40,194 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:34:40,206 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/data/3305bf26e/5c68a5f442664171b7cd50ffebb42768/FLAG571af682b [2018-11-18 16:34:40,224 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/data/3305bf26e/5c68a5f442664171b7cd50ffebb42768 [2018-11-18 16:34:40,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:34:40,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:34:40,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:34:40,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:34:40,233 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:34:40,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3328d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40, skipping insertion in model container [2018-11-18 16:34:40,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:34:40,285 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:34:40,554 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:34:40,567 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:34:40,607 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:34:40,727 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:34:40,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40 WrapperNode [2018-11-18 16:34:40,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:34:40,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:34:40,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:34:40,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:34:40,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... [2018-11-18 16:34:40,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:34:40,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:34:40,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:34:40,798 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:34:40,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/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 16:34:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:34:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:34:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 16:34:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 16:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 16:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 16:34:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 16:34:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 16:34:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 16:34:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 16:34:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 16:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 16:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 16:34:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 16:34:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 16:34:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 16:34:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 16:34:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 16:34:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 16:34:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 16:34:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 16:34:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:34:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:34:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:34:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:34:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:34:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 16:34:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:34:41,556 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:34:41,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:34:41 BoogieIcfgContainer [2018-11-18 16:34:41,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:34:41,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:34:41,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:34:41,561 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:34:41,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:34:40" (1/3) ... [2018-11-18 16:34:41,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f82cdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:34:41, skipping insertion in model container [2018-11-18 16:34:41,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:40" (2/3) ... [2018-11-18 16:34:41,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f82cdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:34:41, skipping insertion in model container [2018-11-18 16:34:41,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:34:41" (3/3) ... [2018-11-18 16:34:41,565 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:34:41,575 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:34:41,582 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:34:41,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:34:41,627 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:34:41,627 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:34:41,628 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:34:41,628 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:34:41,628 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:34:41,628 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:34:41,628 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:34:41,629 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:34:41,629 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:34:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-18 16:34:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 16:34:41,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:41,654 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:41,656 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:41,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash 76029178, now seen corresponding path program 1 times [2018-11-18 16:34:41,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:34:41,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:34:41,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:41,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:41,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:41,775 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 16:34:41,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:41,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:34:41,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:34:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:34:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:34:41,792 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-11-18 16:34:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:41,808 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-11-18 16:34:41,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:34:41,809 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-18 16:34:41,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:41,815 INFO L225 Difference]: With dead ends: 51 [2018-11-18 16:34:41,816 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 16:34:41,819 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 16:34:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 16:34:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 16:34:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 16:34:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-18 16:34:41,850 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2018-11-18 16:34:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:41,850 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-18 16:34:41,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:34:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-18 16:34:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:34:41,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:41,851 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:41,851 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:41,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash 997052427, now seen corresponding path program 1 times [2018-11-18 16:34:41,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:34:41,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:34:41,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:41,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:41,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:41,970 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 16:34:41,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:41,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:34:41,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:34:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:34:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:34:41,973 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2018-11-18 16:34:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:42,122 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-11-18 16:34:42,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:34:42,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-18 16:34:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:42,123 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:34:42,123 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 16:34:42,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:34:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 16:34:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2018-11-18 16:34:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 16:34:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2018-11-18 16:34:42,131 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 19 [2018-11-18 16:34:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:42,132 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2018-11-18 16:34:42,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:34:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-11-18 16:34:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:34:42,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:42,133 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] [2018-11-18 16:34:42,133 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:42,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:42,133 INFO L82 PathProgramCache]: Analyzing trace with hash 170468513, now seen corresponding path program 1 times [2018-11-18 16:34:42,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:34:42,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:34:42,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:42,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:34:42,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:42,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:34:42,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:34:42,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:34:42,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:34:42,234 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 5 states. [2018-11-18 16:34:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:42,322 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-18 16:34:42,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:34:42,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 16:34:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:42,323 INFO L225 Difference]: With dead ends: 59 [2018-11-18 16:34:42,324 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 16:34:42,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:34:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 16:34:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2018-11-18 16:34:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 16:34:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2018-11-18 16:34:42,329 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 22 [2018-11-18 16:34:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:42,330 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-11-18 16:34:42,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:34:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2018-11-18 16:34:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:34:42,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:42,331 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] [2018-11-18 16:34:42,331 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:42,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2075390097, now seen corresponding path program 1 times [2018-11-18 16:34:42,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:34:42,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:34:42,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:42,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:34:42,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:42,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:34:42,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:34:42,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:34:42,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:34:42,591 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2018-11-18 16:34:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:42,670 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-18 16:34:42,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:34:42,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 16:34:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:42,671 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:34:42,671 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 16:34:42,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:34:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 16:34:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2018-11-18 16:34:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 16:34:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 16:34:42,675 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2018-11-18 16:34:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:42,676 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 16:34:42,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:34:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 16:34:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 16:34:42,676 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:42,677 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] [2018-11-18 16:34:42,677 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:42,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2034037060, now seen corresponding path program 1 times [2018-11-18 16:34:42,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:34:42,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:34:42,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:42,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:34:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:34:42,734 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:34:42,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:34:42 BoogieIcfgContainer [2018-11-18 16:34:42,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:34:42,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:34:42,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:34:42,764 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:34:42,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:34:41" (3/4) ... [2018-11-18 16:34:42,767 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:34:42,816 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6dea2618-193b-40b1-bca0-2c6772c349dc/bin-2019/uautomizer/witness.graphml [2018-11-18 16:34:42,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:34:42,817 INFO L168 Benchmark]: Toolchain (without parser) took 2588.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 956.5 MB in the beginning and 999.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 90.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:42,818 INFO L168 Benchmark]: CDTParser took 0.17 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 16:34:42,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:42,819 INFO L168 Benchmark]: Boogie Preprocessor took 69.58 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:42,820 INFO L168 Benchmark]: RCFGBuilder took 758.92 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:42,820 INFO L168 Benchmark]: TraceAbstraction took 1205.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:42,821 INFO L168 Benchmark]: Witness Printer took 52.63 ms. Allocated memory is still 1.2 GB. Free memory is still 999.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:34:42,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 497.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.58 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 758.92 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1205.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.63 ms. Allocated memory is still 1.2 GB. Free memory is still 999.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 652]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L630] COND FALSE !(a == 0) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L631] p = a VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, p={10:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, p={10:0}] [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, t={12:0}] [L639] COND FALSE !(t == 0) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, t={12:0}] [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, t={12:0}] [L645] COND TRUE \read(flag) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, t={12:0}] [L646] EXPR, FCALL p->h VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, p->h=1, t={12:0}] [L646] COND FALSE !(p->h == 2) [L651] EXPR, FCALL p->h VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, p->h=1, t={12:0}] [L651] COND TRUE p->h != 3 [L652] __VERIFIER_error() VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={12:0}, p={10:0}, t={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 76 SDslu, 189 SDs, 0 SdLazy, 127 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, 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, 4 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 4258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...