./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.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_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/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 0449565d36be00deee168302da89fb227fc941e3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:01:33,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:33,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:33,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:33,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:33,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:33,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:33,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:33,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:33,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:33,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:33,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:33,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:33,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:33,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:33,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:33,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:33,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:33,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:33,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:33,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:33,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:33,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:33,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:33,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:33,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:33,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:33,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:33,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:33,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:33,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:33,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:33,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:33,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:33,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:33,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:33,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:33,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:33,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:33,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:33,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:33,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:01:33,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:33,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:33,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:33,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:33,731 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:33,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:33,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:33,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:33,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:33,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:33,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:33,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:33,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:33,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:33,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:33,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:33,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:33,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:33,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:33,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:33,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:33,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:33,735 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_c15a6818-d13d-4473-9aba-3851e8e74292/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 -> 0449565d36be00deee168302da89fb227fc941e3 [2019-10-22 09:01:33,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:33,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:33,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:33,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:33,780 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:33,780 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2019-10-22 09:01:33,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/data/66375fee7/1e28caedfc354f6aabfe7699ff3a065a/FLAG53d5073fd [2019-10-22 09:01:34,208 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:34,209 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2019-10-22 09:01:34,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/data/66375fee7/1e28caedfc354f6aabfe7699ff3a065a/FLAG53d5073fd [2019-10-22 09:01:34,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/data/66375fee7/1e28caedfc354f6aabfe7699ff3a065a [2019-10-22 09:01:34,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:34,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:34,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:34,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:34,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:34,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cdef3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34, skipping insertion in model container [2019-10-22 09:01:34,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:34,253 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:34,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:34,424 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:34,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:34,524 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:34,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34 WrapperNode [2019-10-22 09:01:34,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:34,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:34,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:34,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:34,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:34,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:34,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:34,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:34,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... [2019-10-22 09:01:34,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:34,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:34,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:34,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:34,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/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 09:01:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:34,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 09:01:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 09:01:34,723 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:34,724 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:01:34,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:34 BoogieIcfgContainer [2019-10-22 09:01:34,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:34,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:34,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:34,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:34,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:34" (1/3) ... [2019-10-22 09:01:34,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544fad6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:34, skipping insertion in model container [2019-10-22 09:01:34,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:34" (2/3) ... [2019-10-22 09:01:34,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544fad6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:34, skipping insertion in model container [2019-10-22 09:01:34,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:34" (3/3) ... [2019-10-22 09:01:34,732 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2019-10-22 09:01:34,740 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:34,746 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:34,756 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:34,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:34,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:34,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:34,776 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:34,776 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:34,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:34,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:34,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 09:01:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:01:34,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:34,796 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:34,797 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:34,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1224902363, now seen corresponding path program 1 times [2019-10-22 09:01:34,809 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:34,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754087448] [2019-10-22 09:01:34,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:34,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:34,965 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 09:01:34,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754087448] [2019-10-22 09:01:34,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:34,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:34,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678755620] [2019-10-22 09:01:34,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:34,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:34,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:34,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:34,986 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-10-22 09:01:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:35,055 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-22 09:01:35,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:35,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 09:01:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:35,064 INFO L225 Difference]: With dead ends: 28 [2019-10-22 09:01:35,065 INFO L226 Difference]: Without dead ends: 15 [2019-10-22 09:01:35,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-22 09:01:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-22 09:01:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:01:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-22 09:01:35,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-10-22 09:01:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:35,140 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 09:01:35,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-22 09:01:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:01:35,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:35,141 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:35,142 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash 510739163, now seen corresponding path program 1 times [2019-10-22 09:01:35,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:35,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036193045] [2019-10-22 09:01:35,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:35,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036193045] [2019-10-22 09:01:35,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:35,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:35,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925127174] [2019-10-22 09:01:35,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:35,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:35,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:35,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:35,256 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2019-10-22 09:01:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:35,280 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-10-22 09:01:35,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:35,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-10-22 09:01:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:35,282 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:01:35,282 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 09:01:35,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 09:01:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-22 09:01:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 09:01:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 09:01:35,287 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 16 [2019-10-22 09:01:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:35,288 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 09:01:35,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 09:01:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:01:35,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:35,289 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:35,289 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash 539368314, now seen corresponding path program 1 times [2019-10-22 09:01:35,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:35,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094734545] [2019-10-22 09:01:35,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:35,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094734545] [2019-10-22 09:01:35,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439942933] [2019-10-22 09:01:35,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:35,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:35,459 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:35,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-10-22 09:01:35,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616218500] [2019-10-22 09:01:35,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:01:35,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:35,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:01:35,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:01:35,461 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 9 states. [2019-10-22 09:01:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:35,538 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-22 09:01:35,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:35,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-22 09:01:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:35,539 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:01:35,539 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 09:01:35,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:01:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 09:01:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-22 09:01:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 09:01:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 09:01:35,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2019-10-22 09:01:35,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:35,544 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 09:01:35,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:01:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 09:01:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:01:35,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:35,545 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:35,746 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:35,747 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:35,747 INFO L82 PathProgramCache]: Analyzing trace with hash -747825770, now seen corresponding path program 1 times [2019-10-22 09:01:35,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:35,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123765846] [2019-10-22 09:01:35,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:35,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:01:35,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123765846] [2019-10-22 09:01:35,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915875108] [2019-10-22 09:01:35,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:35,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:35,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:01:35,966 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:35,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2019-10-22 09:01:35,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574390607] [2019-10-22 09:01:35,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:01:35,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:35,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:01:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:35,967 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 11 states. [2019-10-22 09:01:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:36,004 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-22 09:01:36,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:36,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-10-22 09:01:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:36,006 INFO L225 Difference]: With dead ends: 31 [2019-10-22 09:01:36,006 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:01:36,007 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:01:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-22 09:01:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 09:01:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-22 09:01:36,011 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 23 [2019-10-22 09:01:36,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:36,011 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-22 09:01:36,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:01:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-22 09:01:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:01:36,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:36,012 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:36,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:36,213 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash -719196619, now seen corresponding path program 2 times [2019-10-22 09:01:36,214 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:36,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635495420] [2019-10-22 09:01:36,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:01:36,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635495420] [2019-10-22 09:01:36,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071971500] [2019-10-22 09:01:36,397 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:36,454 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:01:36,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:36,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 09:01:36,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:01:36,488 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:36,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-10-22 09:01:36,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716117515] [2019-10-22 09:01:36,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 09:01:36,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 09:01:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:36,490 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 12 states. [2019-10-22 09:01:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:36,542 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-22 09:01:36,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:01:36,543 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2019-10-22 09:01:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:36,543 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:01:36,544 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:01:36,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:01:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:01:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 09:01:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 09:01:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-22 09:01:36,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 23 [2019-10-22 09:01:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:36,548 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-22 09:01:36,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 09:01:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-22 09:01:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 09:01:36,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:36,549 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:36,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:36,750 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash -923746005, now seen corresponding path program 2 times [2019-10-22 09:01:36,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:36,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904412121] [2019-10-22 09:01:36,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 09:01:36,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904412121] [2019-10-22 09:01:36,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87709429] [2019-10-22 09:01:36,935 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:36,968 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:01:36,969 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:36,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:01:36,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-22 09:01:37,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:01:37,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-10-22 09:01:37,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818458740] [2019-10-22 09:01:37,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:37,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:37,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:37,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:37,017 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-10-22 09:01:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,028 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-22 09:01:37,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:37,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 09:01:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,029 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:01:37,030 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:37,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:37,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-22 09:01:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:37,031 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:37,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:37,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:37,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:37,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:01:37,255 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:01:37,255 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:01:37,255 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:01:37,256 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-10-22 09:01:37,256 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 09:01:37,256 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-10-22 09:01:37,256 INFO L446 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2019-10-22 09:01:37,256 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-10-22 09:01:37,256 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 17) no Hoare annotation was computed. [2019-10-22 09:01:37,257 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2019-10-22 09:01:37,257 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-22 09:01:37,257 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2019-10-22 09:01:37,257 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-10-22 09:01:37,257 INFO L446 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2019-10-22 09:01:37,257 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 09:01:37,257 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-10-22 09:01:37,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:37 BoogieIcfgContainer [2019-10-22 09:01:37,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:37,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:37,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:37,265 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:37,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:34" (3/4) ... [2019-10-22 09:01:37,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:37,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-10-22 09:01:37,280 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:01:37,280 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:01:37,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c15a6818-d13d-4473-9aba-3851e8e74292/bin/uautomizer/witness.graphml [2019-10-22 09:01:37,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:37,316 INFO L168 Benchmark]: Toolchain (without parser) took 3088.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 943.1 MB in the beginning and 952.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 160.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:37,317 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:37,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 943.1 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:37,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:37,318 INFO L168 Benchmark]: Boogie Preprocessor took 11.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:37,318 INFO L168 Benchmark]: RCFGBuilder took 163.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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 09:01:37,318 INFO L168 Benchmark]: TraceAbstraction took 2538.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.3 MB in the end (delta: 186.2 MB). Peak memory consumption was 186.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:37,319 INFO L168 Benchmark]: Witness Printer took 50.17 ms. Allocated memory is still 1.2 GB. Free memory is still 959.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:37,321 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 943.1 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 163.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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 2538.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.3 MB in the end (delta: 186.2 MB). Peak memory consumption was 186.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.17 ms. Allocated memory is still 1.2 GB. Free memory is still 959.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 17 SDslu, 371 SDs, 0 SdLazy, 123 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 7973 SizeOfPredicates, 8 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 98/138 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...