./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.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_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/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 84ccfa3799e430dcbaead172aed01f5a507c9465 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:54:38,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:54:38,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:54:38,632 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:54:38,632 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:54:38,633 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:54:38,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:54:38,634 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:54:38,636 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:54:38,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:54:38,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:54:38,637 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:54:38,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:54:38,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:54:38,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:54:38,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:54:38,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:54:38,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:54:38,643 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:54:38,644 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:54:38,645 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:54:38,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:54:38,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:54:38,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:54:38,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:54:38,649 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:54:38,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:54:38,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:54:38,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:54:38,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:54:38,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:54:38,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:54:38,652 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:54:38,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:54:38,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:54:38,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:54:38,655 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 11:54:38,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:54:38,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:54:38,665 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:54:38,665 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:54:38,666 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:54:38,666 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:54:38,666 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:54:38,666 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:54:38,666 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:54:38,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:54:38,666 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:54:38,667 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:54:38,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:54:38,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:54:38,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:54:38,669 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:54:38,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:54:38,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:54:38,669 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_00577c12-342b-4a77-968a-55658647b395/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 -> 84ccfa3799e430dcbaead172aed01f5a507c9465 [2018-11-10 11:54:38,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:54:38,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:54:38,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:54:38,705 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:54:38,706 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:54:38,706 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/../../sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-10 11:54:38,752 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/data/ce49dd3c5/d85f26432ac34b4da4570c5187b95d47/FLAG23a2ee096 [2018-11-10 11:54:39,088 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:54:39,089 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/sv-benchmarks/c/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-10 11:54:39,094 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/data/ce49dd3c5/d85f26432ac34b4da4570c5187b95d47/FLAG23a2ee096 [2018-11-10 11:54:39,102 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/data/ce49dd3c5/d85f26432ac34b4da4570c5187b95d47 [2018-11-10 11:54:39,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:54:39,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:54:39,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:54:39,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:54:39,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:54:39,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c598225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39, skipping insertion in model container [2018-11-10 11:54:39,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:54:39,130 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:54:39,225 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:54:39,227 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:54:39,236 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:54:39,244 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:54:39,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39 WrapperNode [2018-11-10 11:54:39,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:54:39,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:54:39,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:54:39,245 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:54:39,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... [2018-11-10 11:54:39,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:54:39,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:54:39,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:54:39,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:54:39,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/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 11:54:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:54:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:54:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 11:54:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:54:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:54:39,462 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:54:39,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:39 BoogieIcfgContainer [2018-11-10 11:54:39,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:54:39,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:54:39,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:54:39,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:54:39,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:54:39" (1/3) ... [2018-11-10 11:54:39,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e84c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:39, skipping insertion in model container [2018-11-10 11:54:39,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:39" (2/3) ... [2018-11-10 11:54:39,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e84c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:39, skipping insertion in model container [2018-11-10 11:54:39,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:39" (3/3) ... [2018-11-10 11:54:39,470 INFO L112 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1_true-unreach-call_false-termination.i [2018-11-10 11:54:39,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:54:39,485 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:54:39,499 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:54:39,525 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:54:39,526 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:54:39,526 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:54:39,526 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:54:39,526 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:54:39,526 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:54:39,526 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:54:39,526 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:54:39,526 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:54:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 11:54:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 11:54:39,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:54:39,548 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:54:39,549 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:54:39,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:54:39,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1153397670, now seen corresponding path program 1 times [2018-11-10 11:54:39,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:54:39,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:54:39,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:54:39,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:54:39,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:54:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:54:39,642 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 11:54:39,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:54:39,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 11:54:39,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 11:54:39,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 11:54:39,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:54:39,657 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 11:54:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:54:39,671 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-11-10 11:54:39,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 11:54:39,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-10 11:54:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:54:39,679 INFO L225 Difference]: With dead ends: 35 [2018-11-10 11:54:39,679 INFO L226 Difference]: Without dead ends: 16 [2018-11-10 11:54:39,681 INFO L605 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 [2018-11-10 11:54:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-10 11:54:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-10 11:54:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 11:54:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-10 11:54:39,704 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-11-10 11:54:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:54:39,704 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-10 11:54:39,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 11:54:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-10 11:54:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 11:54:39,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:54:39,705 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:54:39,705 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:54:39,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:54:39,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1085730297, now seen corresponding path program 1 times [2018-11-10 11:54:39,706 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:54:39,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:54:39,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:54:39,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:54:39,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:54:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:54:39,767 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 11:54:39,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:54:39,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:54:39,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:54:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:54:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:54:39,769 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-11-10 11:54:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:54:39,792 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-10 11:54:39,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:54:39,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 11:54:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:54:39,793 INFO L225 Difference]: With dead ends: 16 [2018-11-10 11:54:39,793 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 11:54:39,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:54:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 11:54:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 11:54:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 11:54:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 11:54:39,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-10 11:54:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:54:39,795 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:54:39,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:54:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:54:39,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 11:54:39,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 11:54:39,813 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:54:39,814 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 11:54:39,814 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:54:39,814 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-11-10 11:54:39,814 INFO L421 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 0) [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 15 18) no Hoare annotation was computed. [2018-11-10 11:54:39,814 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 11:54:39,815 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-11-10 11:54:39,815 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-11-10 11:54:39,815 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (= main_~x~0 0) [2018-11-10 11:54:39,815 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: false [2018-11-10 11:54:39,815 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 11:54:39,815 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 11:54:39,815 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 11:54:39,815 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 11:54:39,816 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 11:54:39,816 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 11:54:39,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:54:39 BoogieIcfgContainer [2018-11-10 11:54:39,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:54:39,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:54:39,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:54:39,826 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:54:39,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:39" (3/4) ... [2018-11-10 11:54:39,829 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 11:54:39,835 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 11:54:39,835 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 11:54:39,835 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 11:54:39,839 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-10 11:54:39,839 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 11:54:39,839 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 11:54:39,866 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_00577c12-342b-4a77-968a-55658647b395/bin-2019/uautomizer/witness.graphml [2018-11-10 11:54:39,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:54:39,867 INFO L168 Benchmark]: Toolchain (without parser) took 762.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 961.2 MB in the beginning and 1.1 GB in the end (delta: -113.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:54:39,868 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:54:39,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.97 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:54:39,868 INFO L168 Benchmark]: Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:54:39,869 INFO L168 Benchmark]: RCFGBuilder took 200.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 950.4 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:54:39,869 INFO L168 Benchmark]: TraceAbstraction took 361.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2018-11-10 11:54:39,869 INFO L168 Benchmark]: Witness Printer took 40.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:54:39,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.97 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 950.4 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 361.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...