./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c11ac37b43be66e9ce0dd54a8292c8a5449b189d ................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-03 06:46:15,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 06:46:15,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 06:46:15,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 06:46:15,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 06:46:15,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 06:46:15,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 06:46:15,674 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 06:46:15,675 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 06:46:15,676 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 06:46:15,676 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 06:46:15,676 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 06:46:15,677 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 06:46:15,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 06:46:15,678 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 06:46:15,678 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 06:46:15,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 06:46:15,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 06:46:15,680 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 06:46:15,681 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 06:46:15,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 06:46:15,682 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 06:46:15,683 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 06:46:15,683 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 06:46:15,684 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 06:46:15,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 06:46:15,684 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 06:46:15,685 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 06:46:15,685 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 06:46:15,686 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 06:46:15,686 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 06:46:15,687 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 06:46:15,687 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 06:46:15,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 06:46:15,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 06:46:15,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 06:46:15,688 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 06:46:15,699 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 06:46:15,699 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 06:46:15,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 06:46:15,700 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 06:46:15,700 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 06:46:15,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 06:46:15,700 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 06:46:15,701 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 06:46:15,702 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 06:46:15,702 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 06:46:15,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 06:46:15,702 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 06:46:15,702 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 06:46:15,703 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 06:46:15,703 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 06:46:15,704 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 06:46:15,704 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 06:46:15,705 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 06:46:15,705 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 06:46:15,705 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 06:46:15,705 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan 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 -> Taipan 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 -> c11ac37b43be66e9ce0dd54a8292c8a5449b189d [2018-12-03 06:46:15,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 06:46:15,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 06:46:15,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 06:46:15,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 06:46:15,738 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 06:46:15,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i [2018-12-03 06:46:15,774 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/data/4a7a17fd3/7613387ac82f42d28f7ba7147e6857ec/FLAGae5634be0 [2018-12-03 06:46:16,180 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 06:46:16,181 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/sv-benchmarks/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i [2018-12-03 06:46:16,184 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/data/4a7a17fd3/7613387ac82f42d28f7ba7147e6857ec/FLAGae5634be0 [2018-12-03 06:46:16,193 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/data/4a7a17fd3/7613387ac82f42d28f7ba7147e6857ec [2018-12-03 06:46:16,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 06:46:16,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 06:46:16,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 06:46:16,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 06:46:16,198 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 06:46:16,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3d1faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16, skipping insertion in model container [2018-12-03 06:46:16,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 06:46:16,219 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 06:46:16,311 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:46:16,317 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 06:46:16,326 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:46:16,338 INFO L195 MainTranslator]: Completed translation [2018-12-03 06:46:16,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16 WrapperNode [2018-12-03 06:46:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 06:46:16,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 06:46:16,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 06:46:16,339 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 06:46:16,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 06:46:16,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 06:46:16,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 06:46:16,352 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 06:46:16,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... [2018-12-03 06:46:16,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 06:46:16,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 06:46:16,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 06:46:16,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 06:46:16,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/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 [2018-12-03 06:46:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2018-12-03 06:46:16,430 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-12-03 06:46:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 06:46:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2018-12-03 06:46:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2018-12-03 06:46:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 06:46:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 06:46:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 06:46:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 06:46:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 06:46:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 06:46:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 06:46:16,527 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 06:46:16,527 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 06:46:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:46:16 BoogieIcfgContainer [2018-12-03 06:46:16,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 06:46:16,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 06:46:16,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 06:46:16,529 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 06:46:16,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 06:46:16" (1/3) ... [2018-12-03 06:46:16,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fac16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:46:16, skipping insertion in model container [2018-12-03 06:46:16,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:46:16" (2/3) ... [2018-12-03 06:46:16,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fac16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:46:16, skipping insertion in model container [2018-12-03 06:46:16,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:46:16" (3/3) ... [2018-12-03 06:46:16,531 INFO L112 eAbstractionObserver]: Analyzing ICFG 1_3_true-termination.c_false-unreach-call.i [2018-12-03 06:46:16,537 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 06:46:16,541 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 06:46:16,549 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 06:46:16,566 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 06:46:16,566 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 06:46:16,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 06:46:16,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 06:46:16,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 06:46:16,566 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 06:46:16,566 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 06:46:16,566 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 06:46:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-03 06:46:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-03 06:46:16,579 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:46:16,579 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:46:16,580 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:46:16,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:46:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash 546623417, now seen corresponding path program 1 times [2018-12-03 06:46:16,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:46:16,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:46:16,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:46:16,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:46:16,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:46:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:46:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:46:16,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:46:16,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 06:46:16,717 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:46:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 06:46:16,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 06:46:16,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 06:46:16,729 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2018-12-03 06:46:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:46:16,785 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-12-03 06:46:16,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 06:46:16,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-03 06:46:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:46:16,791 INFO L225 Difference]: With dead ends: 49 [2018-12-03 06:46:16,791 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 06:46:16,793 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-03 06:46:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 06:46:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-03 06:46:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 06:46:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-12-03 06:46:16,817 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2018-12-03 06:46:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:46:16,817 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-12-03 06:46:16,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 06:46:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-12-03 06:46:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 06:46:16,817 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:46:16,818 INFO L402 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] [2018-12-03 06:46:16,818 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:46:16,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:46:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1159927970, now seen corresponding path program 1 times [2018-12-03 06:46:16,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:46:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:46:16,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:46:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:46:16,819 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:46:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:46:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:46:16,852 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 06:46:16,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:46:16 BoogieIcfgContainer [2018-12-03 06:46:16,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 06:46:16,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 06:46:16,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 06:46:16,871 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 06:46:16,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:46:16" (3/4) ... [2018-12-03 06:46:16,872 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 06:46:16,898 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0a8f82c3-bf2b-4a5a-8b6c-653cb80910e5/bin-2019/utaipan/witness.graphml [2018-12-03 06:46:16,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 06:46:16,899 INFO L168 Benchmark]: Toolchain (without parser) took 703.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -96.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,899 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:46:16,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.57 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:46:16,900 INFO L168 Benchmark]: Boogie Preprocessor took 12.47 ms. Allocated memory is still 1.0 GB. Free memory was 938.9 MB in the beginning and 936.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,900 INFO L168 Benchmark]: RCFGBuilder took 162.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,901 INFO L168 Benchmark]: TraceAbstraction took 342.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,901 INFO L168 Benchmark]: Witness Printer took 27.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:46:16,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.57 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.47 ms. Allocated memory is still 1.0 GB. Free memory was 938.9 MB in the beginning and 936.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 342.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. * Witness Printer took 27.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] rr * ptr1 = 0; VAL [ptr1={0:0}] [L52] CALL, EXPR getPtr() [L38] CALL, EXPR getrr() [L31] rr * r = (rr *)malloc(sizeof *r); [L32] r -> state = 0 [L33] return r; VAL [\result={6:0}, malloc(sizeof *r)={6:0}, r={6:0}] [L38] RET, EXPR getrr() VAL [getrr()={6:0}] [L38] rr * r = getrr(); [L39] r -> state = 1 [L40] return r; VAL [\result={6:0}, r={6:0}] [L52] RET, EXPR getPtr() VAL [getPtr()={6:0}, ptr1={0:0}] [L52] ptr1 = getPtr() [L53] CALL freePtr(ptr1) VAL [ptr={6:0}] [L45] EXPR ptr -> state VAL [ptr={6:0}, ptr={6:0}, ptr -> state=1] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={6:0}, ptr={6:0}, ptr -> state=1] [L46] ptr -> state = 2 VAL [ptr={6:0}, ptr={6:0}] [L53] RET freePtr(ptr1) VAL [ptr1={6:0}] [L55] CALL freePtr(ptr1) VAL [ptr={6:0}] [L45] EXPR ptr -> state VAL [ptr={6:0}, ptr={6:0}, ptr -> state=2] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={6:0}, ptr={6:0}, ptr -> state=2] [L45] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 3 SDslu, 110 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...