./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/terminator_01.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/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 32428afd68005bcf440791010506ff25981be905 ................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:48:41,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:41,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:41,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:41,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:41,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:41,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:41,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:41,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:41,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:41,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:41,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:41,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:41,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:41,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:41,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:41,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:41,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:41,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:41,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:41,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:41,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:41,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:41,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:41,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:41,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:41,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:41,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:41,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:41,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:41,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:41,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:41,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:41,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:41,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:41,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:41,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:41,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:41,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:41,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:41,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:41,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:41,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:41,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:41,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:41,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:41,457 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:41,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:41,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:41,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:41,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:41,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:41,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:41,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:41,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:41,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:41,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:41,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:41,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/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 -> 32428afd68005bcf440791010506ff25981be905 [2019-11-25 08:48:41,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:41,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:41,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:41,609 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:41,609 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:41,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_01.c [2019-11-25 08:48:41,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/data/1e2ad8a0d/baaaaef63a4f4cba97713c9389f3eddc/FLAG1b6459525 [2019-11-25 08:48:42,046 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:42,048 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/sv-benchmarks/c/loops/terminator_01.c [2019-11-25 08:48:42,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/data/1e2ad8a0d/baaaaef63a4f4cba97713c9389f3eddc/FLAG1b6459525 [2019-11-25 08:48:42,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/data/1e2ad8a0d/baaaaef63a4f4cba97713c9389f3eddc [2019-11-25 08:48:42,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:42,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:42,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:42,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:42,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:42,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317c1155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42, skipping insertion in model container [2019-11-25 08:48:42,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:42,103 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:42,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:42,310 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:42,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:42,337 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:42,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42 WrapperNode [2019-11-25 08:48:42,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:42,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:42,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:42,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:42,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:42,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:42,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:42,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:42,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:42,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:42,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:42,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:42,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/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 [2019-11-25 08:48:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:48:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:42,595 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:42,595 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:48:42,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:42 BoogieIcfgContainer [2019-11-25 08:48:42,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:42,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:42,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:42,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:42,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:42" (1/3) ... [2019-11-25 08:48:42,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5869d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:42, skipping insertion in model container [2019-11-25 08:48:42,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42" (2/3) ... [2019-11-25 08:48:42,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5869d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:42, skipping insertion in model container [2019-11-25 08:48:42,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:42" (3/3) ... [2019-11-25 08:48:42,602 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2019-11-25 08:48:42,611 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:42,616 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:48:42,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:48:42,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:42,646 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:42,647 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:42,660 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:42,660 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:42,661 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:42,661 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:42,661 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-25 08:48:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:48:42,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:42,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:48:42,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:42,706 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2019-11-25 08:48:42,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:42,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140644059] [2019-11-25 08:48:42,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:42,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140644059] [2019-11-25 08:48:42,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:42,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:42,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338138954] [2019-11-25 08:48:42,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:48:42,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:42,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:42,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:42,890 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-25 08:48:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:42,907 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-11-25 08:48:42,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:42,909 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:48:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:42,920 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:48:42,920 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:48:42,924 INFO L630 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 [2019-11-25 08:48:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:48:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:48:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:48:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-25 08:48:42,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-25 08:48:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:42,952 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-25 08:48:42,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:48:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-25 08:48:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:48:42,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:42,953 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:42,953 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1806847180, now seen corresponding path program 1 times [2019-11-25 08:48:42,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:42,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430218477] [2019-11-25 08:48:42,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:42,999 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:42,999 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:48:43,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:43 BoogieIcfgContainer [2019-11-25 08:48:43,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:43,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:43,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:43,020 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:43,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:42" (3/4) ... [2019-11-25 08:48:43,026 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:48:43,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cc40a08a-0947-4ff7-9f82-b433f5eae560/bin/uautomizer/witness.graphml [2019-11-25 08:48:43,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:43,067 INFO L168 Benchmark]: Toolchain (without parser) took 993.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -135.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:43,068 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:43,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.00 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,070 INFO L168 Benchmark]: Boogie Preprocessor took 17.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,070 INFO L168 Benchmark]: RCFGBuilder took 208.78 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,071 INFO L168 Benchmark]: TraceAbstraction took 422.78 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: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,072 INFO L168 Benchmark]: Witness Printer took 45.62 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:43,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.00 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.78 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 422.78 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: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 45.62 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] EXPR \read(x) [L16] COND FALSE !(x<100) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...