./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/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 73643ecf8e1581c13142517bcc63dc5d77c96d29 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-aa41828 [2018-11-23 00:20:09,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:20:09,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:20:09,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:20:09,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:20:09,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:20:09,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:20:09,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:20:09,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:20:09,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:20:09,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:20:09,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:20:09,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:20:09,540 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:20:09,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:20:09,542 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:20:09,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:20:09,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:20:09,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:20:09,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:20:09,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:20:09,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:20:09,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:20:09,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:20:09,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:20:09,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:20:09,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:20:09,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:20:09,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:20:09,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:20:09,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:20:09,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:20:09,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:20:09,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:20:09,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:20:09,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:20:09,555 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 00:20:09,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:20:09,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:20:09,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 00:20:09,566 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 00:20:09,566 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 00:20:09,566 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 00:20:09,567 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 00:20:09,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 00:20:09,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 00:20:09,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:20:09,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:20:09,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 00:20:09,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 00:20:09,570 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_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/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 -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-11-23 00:20:09,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:20:09,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:20:09,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:20:09,603 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:20:09,603 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:20:09,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-23 00:20:09,641 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/data/4004224ce/b7aefdbe3e4d4eb396c5cf215c49caf6/FLAG868cea331 [2018-11-23 00:20:09,969 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:20:09,970 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-23 00:20:09,975 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/data/4004224ce/b7aefdbe3e4d4eb396c5cf215c49caf6/FLAG868cea331 [2018-11-23 00:20:10,400 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/bin-2019/utaipan/data/4004224ce/b7aefdbe3e4d4eb396c5cf215c49caf6 [2018-11-23 00:20:10,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:20:10,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:20:10,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:20:10,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:20:10,407 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:20:10,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77170f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10, skipping insertion in model container [2018-11-23 00:20:10,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:20:10,432 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:20:10,533 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:20:10,535 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:20:10,544 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:20:10,553 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:20:10,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10 WrapperNode [2018-11-23 00:20:10,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:20:10,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:20:10,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:20:10,554 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:20:10,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:20:10,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:20:10,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:20:10,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:20:10,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... [2018-11-23 00:20:10,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:20:10,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:20:10,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:20:10,592 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:20:10,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1db1524-c28c-4c0a-82a6-f1962fc64dfa/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 [2018-11-23 00:20:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 00:20:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 00:20:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:20:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:20:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 00:20:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 00:20:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 00:20:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 00:20:10,802 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:20:10,802 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 00:20:10,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:20:10 BoogieIcfgContainer [2018-11-23 00:20:10,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:20:10,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 00:20:10,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 00:20:10,807 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 00:20:10,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:20:10" (1/3) ... [2018-11-23 00:20:10,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af55b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:20:10, skipping insertion in model container [2018-11-23 00:20:10,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:10" (2/3) ... [2018-11-23 00:20:10,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af55b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:20:10, skipping insertion in model container [2018-11-23 00:20:10,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:20:10" (3/3) ... [2018-11-23 00:20:10,810 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-11-23 00:20:10,820 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 00:20:10,826 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 00:20:10,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 00:20:10,868 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 00:20:10,868 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 00:20:10,868 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 00:20:10,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:20:10,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:20:10,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 00:20:10,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:20:10,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 00:20:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 00:20:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 00:20:10,890 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:20:10,891 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:20:10,893 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:20:10,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:20:10,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-23 00:20:10,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:20:10,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:20:10,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:20:10,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:20:10,943 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:20:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:20:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:20:10,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:20:10,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:20:10,986 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:20:10,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 00:20:10,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 00:20:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 00:20:11,000 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-23 00:20:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:20:11,021 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-23 00:20:11,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 00:20:11,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-23 00:20:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:20:11,029 INFO L225 Difference]: With dead ends: 31 [2018-11-23 00:20:11,029 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 00:20:11,032 INFO L631 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 [2018-11-23 00:20:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 00:20:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 00:20:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 00:20:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-11-23 00:20:11,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2018-11-23 00:20:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:20:11,058 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-11-23 00:20:11,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 00:20:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-11-23 00:20:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 00:20:11,059 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:20:11,059 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:20:11,059 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:20:11,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:20:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2018-11-23 00:20:11,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:20:11,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:20:11,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:20:11,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:20:11,061 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:20:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:20:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:20:11,092 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #38#return; [?] CALL call #t~ret7 := main(); [?] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~y~0 := #t~nondet1;havoc #t~nondet1;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~z~0 := #t~nondet2;havoc #t~nondet2; VAL [main_~x~0=100, main_~y~0=0, main_~z~0=0] [?] assume !(~x~0 < 100 && 100 < ~z~0); VAL [main_~x~0=100, main_~y~0=0, main_~z~0=0] [?] CALL call __VERIFIER_assert(0); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] assume !(~x~0 < 100 && 100 < ~z~0); VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4-L6] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] assume !(~x~0 < 100 && 100 < ~z~0); VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4-L6] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] COND TRUE !(~x~0 < 100 && 100 < ~z~0) VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] COND TRUE !(~x~0 < 100 && 100 < ~z~0) VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] COND TRUE !(~x~0 < 100 && 100 < ~z~0) VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret7 := main(); [L14] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L15] ~y~0 := #t~nondet1; [L15] havoc #t~nondet1; [L16] assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; [L16] ~z~0 := #t~nondet2; [L16] havoc #t~nondet2; VAL [~x~0=100, ~y~0=0, ~z~0=0] [L18-L30] COND TRUE !(~x~0 < 100 && 100 < ~z~0) VAL [~x~0=100, ~y~0=0, ~z~0=0] [L32] CALL call __VERIFIER_assert(0); VAL [#in~cond=0] [L3-L8] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L4] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L5] assert false; VAL [#in~cond=0, ~cond=0] [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100