./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14a31e01d74d5b2ab1d27a07030f460b2f9a710d .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:12:05,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:12:05,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:12:05,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:12:05,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:12:05,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:12:05,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:12:05,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:12:05,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:12:05,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:12:05,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:12:05,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:12:05,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:12:05,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:12:05,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:12:05,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:12:05,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:12:05,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:12:05,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:12:05,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:12:05,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:12:05,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:12:05,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:12:05,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:12:05,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:12:05,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:12:05,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:12:05,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:12:05,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:12:05,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:12:05,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:05,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:05,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:05,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:05,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:05,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:05,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:05,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:05,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:05,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:05,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:05,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:12:05,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:05,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:05,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:05,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:05,687 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:05,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:05,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:05,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:12:05,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:05,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:05,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:05,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:05,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:05,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:05,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:05,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:05,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:05,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:05,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:05,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:05,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:05,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:05,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:05,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:05,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:05,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:12:05,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:12:05,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:05,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:05,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a31e01d74d5b2ab1d27a07030f460b2f9a710d [2020-11-28 03:12:06,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:06,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:06,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:06,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:06,068 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:06,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c [2020-11-28 03:12:06,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/data/b38c82911/0b337bb1860a4e42888269cf18fff824/FLAG6ec646cef [2020-11-28 03:12:06,614 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:06,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c [2020-11-28 03:12:06,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/data/b38c82911/0b337bb1860a4e42888269cf18fff824/FLAG6ec646cef [2020-11-28 03:12:06,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/data/b38c82911/0b337bb1860a4e42888269cf18fff824 [2020-11-28 03:12:07,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:07,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:07,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:07,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:07,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:07,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d1dbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07, skipping insertion in model container [2020-11-28 03:12:07,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:07,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:07,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:07,354 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:07,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:07,425 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:07,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07 WrapperNode [2020-11-28 03:12:07,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:07,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:07,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:07,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:07,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:07,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:07,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:07,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:07,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... [2020-11-28 03:12:07,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:07,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:07,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:07,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:07,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/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 [2020-11-28 03:12:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:12:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 03:12:07,877 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:07,878 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 03:12:07,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:07 BoogieIcfgContainer [2020-11-28 03:12:07,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:07,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:07,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:07,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:07,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:07" (1/3) ... [2020-11-28 03:12:07,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efc71d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:07, skipping insertion in model container [2020-11-28 03:12:07,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:07" (2/3) ... [2020-11-28 03:12:07,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efc71d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:07, skipping insertion in model container [2020-11-28 03:12:07,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:07" (3/3) ... [2020-11-28 03:12:07,912 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound2.c [2020-11-28 03:12:07,929 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:07,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:12:07,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:12:07,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:07,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:07,974 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:07,974 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:07,974 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:07,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:07,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:07,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:12:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:12:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:07,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:07,999 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-11-28 03:12:08,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:08,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791064706] [2020-11-28 03:12:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:08,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791064706] [2020-11-28 03:12:08,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:08,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:12:08,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872993880] [2020-11-28 03:12:08,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:12:08,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:12:08,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:12:08,311 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-28 03:12:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:08,333 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-11-28 03:12:08,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:12:08,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 03:12:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:08,348 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:12:08,348 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:12:08,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:12:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:12:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:12:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:12:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-28 03:12:08,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-11-28 03:12:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:08,404 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-28 03:12:08,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:12:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-28 03:12:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:12:08,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:08,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:08,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:12:08,407 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-11-28 03:12:08,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:08,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253654448] [2020-11-28 03:12:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:08,459 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:12:08,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276536790] [2020-11-28 03:12:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/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 [2020-11-28 03:12:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:08,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:12:08,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:08,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253654448] [2020-11-28 03:12:08,655 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:12:08,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276536790] [2020-11-28 03:12:08,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:08,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:12:08,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376151321] [2020-11-28 03:12:08,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:12:08,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:08,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:12:08,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:12:08,660 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-28 03:12:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:08,777 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-28 03:12:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:12:08,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:12:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:08,780 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:12:08,780 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:12:08,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:12:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:12:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-11-28 03:12:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:12:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 03:12:08,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-11-28 03:12:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:08,790 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 03:12:08,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:12:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 03:12:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:12:08,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:08,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:08,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:12:08,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:08,993 INFO L82 PathProgramCache]: Analyzing trace with hash 637879096, now seen corresponding path program 1 times [2020-11-28 03:12:08,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:08,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017029832] [2020-11-28 03:12:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:09,015 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:12:09,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330052366] [2020-11-28 03:12:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/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 [2020-11-28 03:12:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:09,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:09,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:09,166 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:12:09,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:12:09,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:09,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:09 BoogieIcfgContainer [2020-11-28 03:12:09,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:09,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:09,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:09,402 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:09,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:07" (3/4) ... [2020-11-28 03:12:09,405 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:12:09,458 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce831f1f-b2c7-49df-ad4f-74c69533b7ec/bin/uautomizer/witness.graphml [2020-11-28 03:12:09,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:09,461 INFO L168 Benchmark]: Toolchain (without parser) took 2453.36 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 37.8 MB in the end (delta: 37.7 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,462 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:09,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.85 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 98.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.81 ms. Allocated memory is still 121.6 MB. Free memory was 98.7 MB in the beginning and 97.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,464 INFO L168 Benchmark]: Boogie Preprocessor took 27.55 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 95.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:09,465 INFO L168 Benchmark]: RCFGBuilder took 359.88 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 83.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,466 INFO L168 Benchmark]: TraceAbstraction took 1505.75 ms. Allocated memory is still 121.6 MB. Free memory was 82.5 MB in the beginning and 39.9 MB in the end (delta: 42.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,467 INFO L168 Benchmark]: Witness Printer took 57.21 ms. Allocated memory is still 121.6 MB. Free memory was 39.9 MB in the beginning and 37.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:09,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.85 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 98.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.81 ms. Allocated memory is still 121.6 MB. Free memory was 98.7 MB in the beginning and 97.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.55 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 95.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.88 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 83.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1505.75 ms. Allocated memory is still 121.6 MB. Free memory was 82.5 MB in the beginning and 39.9 MB in the end (delta: 42.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Witness Printer took 57.21 ms. Allocated memory is still 121.6 MB. Free memory was 39.9 MB in the beginning and 37.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L9] __assert_fail("0", "geo1-u.c", 9, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 5 SDslu, 20 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 5 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...