./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b ......................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 03:18:17,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:18:17,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:18:17,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:18:17,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:18:17,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:18:17,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:18:17,974 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:18:17,975 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:18:17,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:18:17,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:18:17,977 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:18:17,977 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:18:17,978 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:18:17,979 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:18:17,979 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:18:17,980 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:18:17,981 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:18:17,982 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:18:17,984 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:18:17,984 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:18:17,985 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:18:17,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:18:17,987 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:18:17,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:18:17,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:18:17,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:18:17,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:18:17,989 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:18:17,990 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:18:17,990 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:18:17,991 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:18:17,991 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:18:17,991 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:18:17,992 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:18:17,992 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:18:17,992 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 03:18:18,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:18:18,002 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:18:18,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:18:18,002 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:18:18,003 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:18:18,003 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:18:18,003 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:18:18,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:18:18,004 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:18:18,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:18:18,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:18:18,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:18:18,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:18:18,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:18:18,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 03:18:18,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:18:18,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:18:18,006 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_a0b83010-52ea-46c7-a18d-19f49c2eea10/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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2018-11-10 03:18:18,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:18:18,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:18:18,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:18:18,039 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:18:18,039 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:18:18,040 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-10 03:18:18,076 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/data/335df2835/95a91445c0b546e48f6d1fa35b9ff6f6/FLAG408913b27 [2018-11-10 03:18:18,472 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:18:18,472 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-10 03:18:18,477 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/data/335df2835/95a91445c0b546e48f6d1fa35b9ff6f6/FLAG408913b27 [2018-11-10 03:18:18,485 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/data/335df2835/95a91445c0b546e48f6d1fa35b9ff6f6 [2018-11-10 03:18:18,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:18:18,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:18:18,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:18:18,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:18:18,490 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:18:18,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303feec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18, skipping insertion in model container [2018-11-10 03:18:18,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:18:18,508 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:18:18,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:18:18,595 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:18:18,604 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:18:18,611 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:18:18,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18 WrapperNode [2018-11-10 03:18:18,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:18:18,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:18:18,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:18:18,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:18:18,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... [2018-11-10 03:18:18,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:18:18,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:18:18,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:18:18,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:18:18,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/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 [2018-11-10 03:18:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:18:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:18:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-10 03:18:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2018-11-10 03:18:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:18:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:18:18,849 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:18:18,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:18:18 BoogieIcfgContainer [2018-11-10 03:18:18,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:18:18,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:18:18,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:18:18,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:18:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:18:18" (1/3) ... [2018-11-10 03:18:18,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255ab42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:18:18, skipping insertion in model container [2018-11-10 03:18:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:18" (2/3) ... [2018-11-10 03:18:18,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255ab42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:18:18, skipping insertion in model container [2018-11-10 03:18:18,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:18:18" (3/3) ... [2018-11-10 03:18:18,855 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call.i [2018-11-10 03:18:18,861 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:18:18,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:18:18,875 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:18:18,895 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:18:18,896 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:18:18,896 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:18:18,896 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:18:18,896 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:18:18,896 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:18:18,896 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:18:18,896 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:18:18,896 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:18:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 03:18:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 03:18:18,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:18,916 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:18:18,917 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:18,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1835521858, now seen corresponding path program 1 times [2018-11-10 03:18:18,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:18:18,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:18:18,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:18,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:18,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:19,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:18:19,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 03:18:19,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 03:18:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 03:18:19,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:18:19,064 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2018-11-10 03:18:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:18:19,129 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2018-11-10 03:18:19,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 03:18:19,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-10 03:18:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:18:19,134 INFO L225 Difference]: With dead ends: 46 [2018-11-10 03:18:19,135 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 03:18:19,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:18:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 03:18:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-10 03:18:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 03:18:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-10 03:18:19,159 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-11-10 03:18:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:18:19,159 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-10 03:18:19,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 03:18:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-10 03:18:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 03:18:19,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:19,160 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:18:19,160 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:19,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash -932126179, now seen corresponding path program 1 times [2018-11-10 03:18:19,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:18:19,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:18:19,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:19,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:19,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:19,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:18:19,246 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:18:19,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:19,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:19,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:18:19,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2018-11-10 03:18:19,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 03:18:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 03:18:19,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:18:19,353 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2018-11-10 03:18:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:18:19,420 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-10 03:18:19,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 03:18:19,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-10 03:18:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:18:19,421 INFO L225 Difference]: With dead ends: 34 [2018-11-10 03:18:19,421 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 03:18:19,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-10 03:18:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 03:18:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-10 03:18:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 03:18:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-10 03:18:19,427 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-10 03:18:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:18:19,427 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-10 03:18:19,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 03:18:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-10 03:18:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 03:18:19,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:19,428 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:18:19,428 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:19,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:19,428 INFO L82 PathProgramCache]: Analyzing trace with hash 362131422, now seen corresponding path program 2 times [2018-11-10 03:18:19,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:18:19,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:18:19,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:19,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:19,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:18:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:18:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:18:19,455 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 03:18:19,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:18:19 BoogieIcfgContainer [2018-11-10 03:18:19,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:18:19,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:18:19,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:18:19,472 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:18:19,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:18:18" (3/4) ... [2018-11-10 03:18:19,474 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 03:18:19,505 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a0b83010-52ea-46c7-a18d-19f49c2eea10/bin-2019/uautomizer/witness.graphml [2018-11-10 03:18:19,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:18:19,506 INFO L168 Benchmark]: Toolchain (without parser) took 1018.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 959.8 MB in the beginning and 1.0 GB in the end (delta: -86.0 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:19,507 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:18:19,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:19,507 INFO L168 Benchmark]: Boogie Preprocessor took 22.90 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:18:19,508 INFO L168 Benchmark]: RCFGBuilder took 214.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 949.1 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:19,508 INFO L168 Benchmark]: TraceAbstraction took 620.85 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:19,509 INFO L168 Benchmark]: Witness Printer took 33.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:19,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.90 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 214.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 949.1 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 620.85 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. * Witness Printer took 33.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 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: [L23] int i=0; VAL [i=0] [L24] COND TRUE i<5 [L25] i++ VAL [i=1] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=1] [L24] COND TRUE i<5 [L25] i++ VAL [i=2] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=2] [L24] COND TRUE i<5 [L25] i++ VAL [i=3] [L29] CALL check_error(i!=3) VAL [\old(b)=0] [L18] COND FALSE !((b) ? (0) : __blast_assert ()) VAL [\old(b)=0, b=0] [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 117 SDs, 0 SdLazy, 67 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635 SizeOfPredicates, 2 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...