./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test21-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/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 e96ea2b5694d083c4ab21538f2478ac793ab7d6e ................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:58,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:58,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:58,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:58,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:58,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:58,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:58,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:58,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:58,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:58,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:58,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:58,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:58,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:58,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:58,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:58,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:58,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:58,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:58,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:58,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:58,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:58,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:58,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:58,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:58,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:58,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:58,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:58,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:58,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:58,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:58,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:58,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:58,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:58,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:58,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:58,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:58,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:58,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:58,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:58,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:58,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:58,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:58,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:58,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:58,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:58,546 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:58,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:58,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:58,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:58,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:58,547 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:58,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:58,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:58,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:58,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:58,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:58,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:58,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:58,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:58,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:58,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:58,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:58,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:58,550 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/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/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 -> e96ea2b5694d083c4ab21538f2478ac793ab7d6e [2019-10-22 09:02:58,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:58,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:58,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:58,591 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:58,592 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:58,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test21-1.c [2019-10-22 09:02:58,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/data/76d6c0312/578c3ccd6aa64d819d4ee35bb88c342c/FLAG57de88e85 [2019-10-22 09:02:59,027 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:59,028 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/sv-benchmarks/c/ldv-regression/test21-1.c [2019-10-22 09:02:59,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/data/76d6c0312/578c3ccd6aa64d819d4ee35bb88c342c/FLAG57de88e85 [2019-10-22 09:02:59,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/data/76d6c0312/578c3ccd6aa64d819d4ee35bb88c342c [2019-10-22 09:02:59,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:59,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:59,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:59,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:59,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:59,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55009174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59, skipping insertion in model container [2019-10-22 09:02:59,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,069 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:59,084 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:59,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:59,304 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:59,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:59,339 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:59,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59 WrapperNode [2019-10-22 09:02:59,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:59,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:59,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:59,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:59,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:59,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:59,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:59,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:59,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... [2019-10-22 09:02:59,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:59,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:59,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:59,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:59,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/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 [2019-10-22 09:02:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 09:02:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:59,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:02:59,673 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:59,674 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 09:02:59,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:59 BoogieIcfgContainer [2019-10-22 09:02:59,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:59,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:59,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:59,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:59,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:59" (1/3) ... [2019-10-22 09:02:59,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4333e0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:59, skipping insertion in model container [2019-10-22 09:02:59,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:59" (2/3) ... [2019-10-22 09:02:59,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4333e0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:59, skipping insertion in model container [2019-10-22 09:02:59,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:59" (3/3) ... [2019-10-22 09:02:59,681 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2019-10-22 09:02:59,689 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:59,696 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:59,705 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:59,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:59,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:59,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:59,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:59,726 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:59,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:59,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:59,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 09:02:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:02:59,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,745 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,746 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 167538580, now seen corresponding path program 1 times [2019-10-22 09:02:59,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666669014] [2019-10-22 09:02:59,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:03:00,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666669014] [2019-10-22 09:03:00,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:03:00,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-22 09:03:00,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993916971] [2019-10-22 09:03:00,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:03:00,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:00,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:03:00,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:03:00,060 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 10 states. [2019-10-22 09:03:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:00,589 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2019-10-22 09:03:00,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:03:00,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-10-22 09:03:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:00,600 INFO L225 Difference]: With dead ends: 67 [2019-10-22 09:03:00,600 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:03:00,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2019-10-22 09:03:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:03:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:03:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:03:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:03:00,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-22 09:03:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:00,629 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:03:00,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:03:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:03:00,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:03:00,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:03:00,672 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,673 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-10-22 09:03:00,673 INFO L439 ceAbstractionStarter]: At program point L27(lines 25 28) the Hoare annotation is: (and (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset) (<= 1 |ULTIMATE.start_check_#res|)) [2019-10-22 09:03:00,673 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 18) no Hoare annotation was computed. [2019-10-22 09:03:00,673 INFO L439 ceAbstractionStarter]: At program point L36(lines 31 44) the Hoare annotation is: false [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 38) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L22-2(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,674 INFO L446 ceAbstractionStarter]: At program point L22-3(lines 20 23) the Hoare annotation is: true [2019-10-22 09:03:00,674 INFO L443 ceAbstractionStarter]: For program point L22-4(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,675 INFO L443 ceAbstractionStarter]: For program point L22-6(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,675 INFO L446 ceAbstractionStarter]: At program point L22-7(lines 20 23) the Hoare annotation is: true [2019-10-22 09:03:00,675 INFO L446 ceAbstractionStarter]: At program point L43(lines 30 44) the Hoare annotation is: true [2019-10-22 09:03:00,675 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 37) no Hoare annotation was computed. [2019-10-22 09:03:00,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:03:00 BoogieIcfgContainer [2019-10-22 09:03:00,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:03:00,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:00,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:00,690 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:00,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:59" (3/4) ... [2019-10-22 09:03:00,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:03:00,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:03:00,703 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 09:03:00,729 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (pd1 == pd2 && pd2 == pd1) && 1 <= \result [2019-10-22 09:03:00,756 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e099a3ce-5cfa-41c5-8a95-bef67d2d69c8/bin/uautomizer/witness.graphml [2019-10-22 09:03:00,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:00,765 INFO L168 Benchmark]: Toolchain (without parser) took 1713.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -53.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,766 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.40 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. [2019-10-22 09:03:00,767 INFO L168 Benchmark]: Boogie Preprocessor took 20.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,767 INFO L168 Benchmark]: RCFGBuilder took 278.42 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,767 INFO L168 Benchmark]: TraceAbstraction took 1013.36 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: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,768 INFO L168 Benchmark]: Witness Printer took 74.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.40 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. * Boogie Preprocessor took 20.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 278.42 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1013.36 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: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 11.5 GB. * Witness Printer took 74.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (pd1 == pd2 && pd2 == pd1) && 1 <= \result - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 72 SDslu, 77 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 20 NumberOfFragments, 14 HoareAnnotationTreeSize, 5 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 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 correct! Received shutdown request...